All Primary Mirrors Fully Installed on NASA’s James Webb Space Telescope

All 18 primary mirrors of NASA’s James Webb Space Telescope are seen fully installed on the backplane structure by technicians using a robotic arm (center) inside the massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland. Credit: Ken Kremer/kenkremer.com
All 18 primary mirrors of NASA’s James Webb Space Telescope are seen fully installed on the backplane structure by technicians using a robotic arm (center) inside the massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland.  Credit: Ken Kremer/kenkremer.com
All 18 primary mirrors of NASA’s James Webb Space Telescope are seen fully installed on the backplane structure by technicians using a robotic arm (center) inside the massive clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Credit: Ken Kremer/kenkremer.com

NASA GODDARD SPACE FLIGHT CENTER, MD – All 18 of the primary mirrors have been fully installed onto the flight structure of what will become the biggest and most powerful space telescope ever built by humankind – NASA’s James Webb Space Telescope (JWST).

Completion of the huge and complex primary mirror marks a historic milestone and a banner start to 2016 for JWST, commencing the final assembly phase of the colossal observatory that will revolutionize our understanding of the cosmos and our place it in.

After JWST launches in slightly less than three years time, the gargantuan observatory will significantly exceed the light gathering power of the currently most powerful space telescope ever sent to space – NASA’s Hubble!

Indeed JWST is the scientific successor to NASA’s 25 year old Hubble Space Telescope.

Technicians working inside the massive clean room at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, have been toiling around the clock 24/7 to fully install all 18 primary mirror segments onto the mirror holding backplane structure. This author witnessed ongoing work in progress during installation of the last of the primary mirrors.

The engineers and scientists kept up the pace of their assembly work over the Christmas holidays and also during January’s record breaking monster Snowzilla storm, that dumped two feet or more of snow across the Eastern US from Washington DC to New York City and temporarily shut down virtually all travel.

The team used a specialized robotic arm functioning like a claw to meticulously latch on to, maneuver and attach each of the 18 primary mirrors onto the telescope structure.

Each of the 18 hexagonal-shaped primary mirror segments measures just over 4.2 feet (1.3 meters) across and weighs approximately 88 pounds (40 kilograms). They are made of beryllium and about the size of a coffee table.

Inside a massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland the James Webb Space Telescope team used a robotic am to install the last of the telescope's 18 mirrors onto the telescope structure.  Credits: NASA/Chris Gunn
Inside a massive clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland the James Webb Space Telescope team used a robotic am to install the last of the telescope’s 18 mirrors onto the telescope structure. Credits: NASA/Chris Gunn

In space, the folded mirror structure will unfold into side by side sections and work together as one large 21.3-foot (6.5-meter) mirror, unprecedented in size and light gathering capability.

The telescopes mirror assembly is comprised of three segments – the main central segment holding 12 mirrors and a pair of foldable outer wing-like segments that hold three mirrors each.

The painstaking assembly work to piece the primary mirrors together began just before the Thanksgiving 2015 holiday, when the first unit was successfully installed onto the central segment of the mirror holding backplane assembly.

One by one the team populated the telescope structure with the primary mirrors at a pace of roughly two per week since the installations started some two and a half months ago.

During the installation process each of the gold coated primary mirrors was covered with a black colored cover to protect them from optical contamination.

The mirror covers will be removed over the summer for testing purposes, said Lee Feinberg, optical telescope element manager at Goddard, told Universe Today.

The two wings were unfolded from their stowed-for-launch configuration to the “deployed” configuration to carry out the mirror installation. They will be folded back over into launch configuration for eventual placement inside the payload fairing of the Ariane V ECA booster rocket that will launch JWST three years from now.

Up close view of primary mirrors installed on mirror holding structure of  NASA’s James Webb Space Telescope by technicians working inside the massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland.  Credit: Ken Kremer/kenkremer.com
Up close view of primary mirrors installed on mirror holding structure of NASA’s James Webb Space Telescope by technicians working inside the massive clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Credit: Ken Kremer/kenkremer.com

“Scientists and engineers have been working tirelessly to install these incredible, nearly perfect mirrors that will focus light from previously hidden realms of planetary atmospheres, star forming regions and the very beginnings of the Universe,” said John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington, in a statement.

“With the mirrors finally complete, we are one step closer to the audacious observations that will unravel the mysteries of the Universe.”

The mirrors were built by Ball Aerospace & Technologies Corp., in Boulder, Colorado. Ball is the principal subcontractor to Northrop Grumman for the optical technology and lightweight mirror system. The installation of the mirrors onto the telescope structure is performed by Harris Corporation of Rochester, New York. Harris Corporation leads integration and testing for the telescope, according to NASA.

In this rare view, the James Webb Space Telescope's 18 mirrors are seen fully installed on the James Webb Space Telescope structure at NASA's Goddard Space Flight Center in Greenbelt, Maryland.  Credits: NASA/Chris Gunn
In this rare view, the James Webb Space Telescope’s 18 mirrors are seen fully installed on the James Webb Space Telescope structure at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Credits: NASA/Chris Gunn

Among the next construction steps are installation of the aft optics assembly and the secondary mirror.

After that the team will install what’s known as the ‘heart of the telescope’ – the Integrated Science Instrument Module ISIM). Then comes acoustic and vibration tests throughout this year. Eventually the finished assembly will be shipped to Johnson Space Center in Houston “for an intensive cryogenic optical test to ensure everything is working properly,” say officials.

Up close view of JWST secondary mirror yet to be installed on tripod of telescope structure inside the massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland.  Credit: Ken Kremer/kenkremer.com
Up close view of JWST secondary mirror yet to be installed on tripod of telescope structure inside the massive clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Credit: Ken Kremer/kenkremer.com

The flight structure and backplane assembly serve as the $8.6 Billion Webb telescopes backbone.

The telescope will launch on an Ariane V booster from the Guiana Space Center in Kourou, French Guiana in 2018.

The Webb Telescope is a joint international collaborative project between NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA).

Webb is designed to look at the first light of the Universe and will be able to peer back in time to when the first stars and first galaxies were forming. It will also study the history of our universe and the formation of our solar system as well as other solar systems and exoplanets, some of which may be capable of supporting life on planets similar to Earth.

“JWST has the capability to look back towards the very first objects that formed after the Big Bang,” said Dr. John Mather, NASA’s Nobel Prize Winning scientist, in a recent exclusive interview with Universe Today at NASA Goddard.

Technician monitors installation of last of 18 primary mirrors onto structure of NASA’s James Webb Space Telescope inside the massive clean room at NASA's Goddard Space Flight Center in Greenbelt, Maryland.  Secondary mirror holding tripod at right, top.  Credit: Ken Kremer/kenkremer.com
Technician monitors installation of last of 18 primary mirrors onto structure of NASA’s James Webb Space Telescope inside the massive clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Secondary mirror holding tripod at right, top. Credit: Ken Kremer/kenkremer.com

Watch this space for my ongoing reports on JWST mirrors, construction and testing.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

View showing actual flight structure of mirror backplane unit for NASA's James Webb Space Telescope (JWST) that holds 18 segment primary mirror array and secondary mirror mount at front, in stowed-for-launch configuration.  JWST is being assembled here by technicians inside the world’s largest cleanroom at NASA Goddard Space Flight Center, Greenbelt, Md.  Credit: Ken Kremer/kenkremer.com
View showing actual flight structure of mirror backplane unit for NASA’s James Webb Space Telescope (JWST) that holds 18 segment primary mirror array and secondary mirror mount at front, in stowed-for-launch configuration. JWST is being assembled here by technicians inside the world’s largest cleanroom at NASA Goddard Space Flight Center, Greenbelt, Md. Credit: Ken Kremer/kenkremer.com

International Space Station Achieves 15 Years of Continuous Human Presence in Orbit

The International Space Station (ISS) has grown tremendously in size and complexity and evolved significantly over 15 years of continuous human occupation from Nov. 2, 2000 to Nov. 2, 2015. Credit: NASA

The International Space Station (ISS) achieved 15 years of a continuous human presence in orbit, as of today, Nov. 2, aboard the football field sized research laboratory ever since the first Russian/American crew of three cosmonauts and astronauts comprising Expedition 1 arrived in a Soyuz capsule at the then much tinier infant orbiting complex on Nov. 2, 2000.

Today, the space station is host to the Expedition 45 crew of six humans – from America, Russia and Japan – that very symbolically also includes the first ever crew spending one year aboard and that highlights the outposts expanding role from a research lab to a deep space exploration test bed for experiments and technologies required for sending humans on interplanetary journeys to the Martian system in the 2030s.

The ISS was only made possible by over two decades of peaceful and friendly international cooperation by the most powerful nations on Earth on a scale rarely seen.

“I believe the International Space Station should be considered for the Nobel Peace Prize,” said NASA Administrator Charles Bolden last week during remarks to the Center for American Progress in Washington, DC., on October 28, 2015.

“Exploration has taught us more than we have ever known about our Universe and our place in it.”

“The ISS has already taught us what’s possible when tens of thousands of people across 15 countries collaborate so that human beings from different nations can live and work in space together.”

“Yet, for all these accomplishments, when you consider all the possibilities ahead of us you can only reach one conclusion; We are just getting started!”

6 person ISS Expedition 45 Crew celebrates 15 Years of operation with humans on 2 Nov 2015.  Credit: NASA
6 person ISS Expedition 45 Crew celebrates 15 Years of operation with humans on 2 Nov 2015. Credit: NASA

“No better place to celebrate #15YearsOnStation! #HappyBday, @space_station! Thanks for the hospitality! #YearInSpace.” tweeted NASA astronaut Scott Kelly from the ISS today along with a crew portrait.

The space station is the largest engineering and construction project in space combining the funding, hardware, knowhow, talents and crews from 5 space agencies and 15 countries – NASA, Roscomos, ESA (European Space Agency), JAXA (Japan Aerospace and Exploration Agency) and CSA (Canadian Space Agency).

NASA astronaut Tracy Caldwell Dyson, an Expedition 24 flight engineer in 2010, took a moment during her space station mission to enjoy an unmatched view of home through a window in the Cupola of the International Space Station, the brilliant blue and white part of Earth glowing against the blackness of space.  Credits: NASA
NASA astronaut Tracy Caldwell Dyson, an Expedition 24 flight engineer in 2010, took a moment during her space station mission to enjoy an unmatched view of home through a window in the Cupola of the International Space Station, the brilliant blue and white part of Earth glowing against the blackness of space. Credits: NASA

The collaborative work in space has transcended our differences here on Earth and points the way forward to an optimistic future that benefits all humanity.

The station orbits at an altitude of about 250 miles (400 kilometers) above Earth. It measures 357 feet (109 meters) end-to-end and has an internal pressurized volume of 32,333 cubic feet, equivalent to that of a Boeing 747.

The uninterrupted human presence on the station all began when Expedition 1 docked at the outpost on Nov. 2, 2000, with its first residents including Commander William Shepherd of NASA and cosmonauts Sergei Krikalev and Yuri Gidzenko of Roscosmos.

For the first station trio in November 2000, the vehicle included three modules; the Zarya module and the Zvezda service module from Russia and the Unity module from the US.

In this photo, Expedition 1 crew members (from left to right) Commander Bill Shepherd, and Flight Engineers Yuri Gidzenko and Sergei Krikalev pose with a model of their home away from home.  Image Credit: NASA
In this photo, Expedition 1 crew members (from left to right) Commander Bill Shepherd, and Flight Engineers Yuri Gidzenko and Sergei Krikalev pose with a model of their home away from home. Image Credit: NASA

Over the past 15 years, after more than 115 construction and logistics flight, the station has grown by leaps and bounds from its small initial configuration of only three pressurized modules from Russian and America into a sprawling million pound orbiting outpost sporting a habitable volume the size of a six bedroom house, with additional new modules and hardware from Europe, Japan and Canada.

The ISS has been visited by over 220 people from 17 countries.

The “1 Year ISS crew” reflects the international cooperation that made the station possible and comprises current ISS commander NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are now just past the half way mark of their mission.

“Over the weekend, I called NASA astronaut Scott Kelly, who is currently halfway through his one-year mission aboard the International Space Station, to congratulate him on setting the American records for both cumulative and continuous days in space,” Bolden said in a NASA statement released today.

“I also took the opportunity to congratulate Commander Kelly — and the rest of the space station crew — for being part of a remarkable moment 5,478 days in the making: the 15th anniversary of continuous human presence aboard the space station.”

Scott Kelly, U.S. astronaut and commander of the current Expedition 45 crew, broke the US record for time spent in space on Oct. 16, 2015. Credit: NASA
Scott Kelly, U.S. astronaut and commander of the current Expedition 45 crew, broke the US record for time spent in space on Oct. 16, 2015. Credit: NASA

The complete Expedition 45 crew members include Station Commander Scott Kelly and Flight Engineer Kjell Lindgren of NASA, Flight Engineers Mikhail Kornienko, Oleg Kononenko and Sergey Volkov of the Russian Federal Space Agency (Roscosmos) and Flight Engineer Kimiya Yui of the Japan Aerospace Exploration Agency.

For the first nine years, the station was home to crews of two or three. Starting in 2009 the crew size was doubled to a permanent crew of six humans after the habitable volume, research facilities, equipment and supporting provisions had grown sufficiently.

“Humans have been living in space aboard the International Space Station 24-7-365 since Nov. 2, 2000. That’s 15 Thanksgivings, New Years, and holiday seasons astronauts have spent away from their families. 15 years of constant support from Mission Control Houston. And 15 years of peaceful international living in space,” says NASA.

Expedition 45 Crew Portrait: Station Commander Scott Kelly and Flight Engineer Kjell Lindgren of NASA, Flight Engineers Mikhail Kornienko, Oleg Kononenko and Sergey Volkov of the Russian Federal Space Agency (Roscosmos) and Flight Engineer Kimiya Yui of the Japan Aerospace Exploration Agency.  Credit: NASA/Roscosmos/JAXA
Expedition 45 Crew Portrait: Station Commander Scott Kelly and Flight Engineer Kjell Lindgren of NASA, Flight Engineers Mikhail Kornienko, Oleg Kononenko and Sergey Volkov of the Russian Federal Space Agency (Roscosmos) and Flight Engineer Kimiya Yui of the Japan Aerospace Exploration Agency. Credit: NASA/Roscosmos/JAXA

The US contributed and built the largest number of segments of the space station, followed by Russia.

NASA’s Space Shuttles hauled the US segments aloft inside the orbiters huge payload bay, starting from the first construction mission in 1998 carrying the Unity module to the final shuttle flight STS-135 in 2011, which marked the completion of construction and retirement of the shuttles.

With the shuttle orbiters now sitting in museums and no longer flying, the Russian Soyuz capsule is the only means of transporting crews to the space station and back.

The longevity of the ISS was recently extended from 2020 to 2024 after approval from President Obama. Most of the partners nations have also agreed to the extension. Many in the space community believe the station hardware is quite resilient and hope for further extensions to 2028 and beyond.

“The International Space Station, which President Obama has extended through 2024, is a testament to the ingenuity and boundless imagination of the human spirit. The work being done on board is an essential part of NASA’s journey to Mars, which will bring American astronauts to the Red Planet in the 2030s,” says Bolden.

“For 15 years, humanity’s reach has extended beyond Earth’s atmosphere. Since 2000, human beings have been living continuously aboard the space station, where they have been working off-the-Earth for the benefit of Earth, advancing scientific knowledge, demonstrating new technologies, and making research breakthroughs that will enable long-duration human and robotic exploration into deep space.”

A key part of enabling long duration space missions to Mars is the 1 Year ISS Mission.

Scott Kelly recently set the US records for most time in space and longest single space mission.

In coming years, additional new pressurized modules and science labs will be added by Russia and the US.

And NASA says the stations crew size will expand to seven after the US commercial Starliner and Dragon space taxis from Boeing and SpaceX start flying in 2017.

NASA is now developing the new Orion crew capsule and mammoth Space Launch System (SLS) heavy lift rocket to send astronauts to deep space destination including the Moon, asteroids and the Red Planet.

In the meantime, Kelly and his crew are also surely looking forward to the arrival of the next Orbital ATK Cygnus resupply ship carrying science experiments, provisions, spare parts, food and other goodies after it blasts off from Florida on Dec. 3 – detailed in my story here.

Infographic: 15 Years of Continuous Human Presence Aboard the International Space Station.  Credit: NASA
Infographic: 15 Years of Continuous Human Presence Aboard the International Space Station. Credit: NASA

Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.

Ken Kremer

STS-135: Last launch using RS-25 engines that will now power NASA’s SLS deep space exploration rocket. NASA’s 135th and final shuttle mission takes flight on July 8, 2011 at 11:29 a.m. from the Kennedy Space Center in Florida bound for the ISS and the high frontier with Chris Ferguson as Space Shuttle Commander. Credit: Ken Kremer/kenkremer.com
STS-135: Last launch using RS-25 engines that will now power NASA’s SLS deep space exploration rocket. NASA’s 135th and final shuttle mission takes flight on July 8, 2011 at 11:29 a.m. from the Kennedy Space Center in Florida bound for the final flight to the ISS and the high frontier with Chris Ferguson as Space Shuttle Commander. Credit: Ken Kremer/kenkremer.com

James Webb Space Telescope’s Pathfinder Mirror Backplane Arrives at NASA Goddard for Critical Assembly Testing

Center section of the "pathfinder" (test) backplane of NASA's James Webb Space Telescope is hoisted into place in the assembly stand in NASA Goddard's giant cleanroom. Engineers will practice mirror installations over the next several months. Credit: NASA/Chris Gunn

The central piece of the “pathfinder” backplane that will hold all the mirrors for NASA’s James Webb Space Telescope (JWST) has arrived at the agency’s Goddard Space Flight Center in Maryland for critical assembly testing on vital parts of the mammoth telescope.

The pathfinder backplane arrived at Goddard in July and has now been hoisted in place onto a huge assembly stand inside Goddard’s giant cleanroom where many key elements of JWST are being assembled and tested ahead of the launch scheduled for October 2018.

The absolutely essential task of JWST’s backplane is to hold the telescopes 18 segment, 21-foot-diameter primary mirror nearly motionless while floating in the utterly frigid space environment, thereby enabling the telescope to peer out into deep space for precise science gathering measurements never before possible.

Over the next several months, engineers will practice installing two spare primary mirror segments and one spare secondary mirror onto the center part of the backplane.

JWST is being assembled here inside the world’s largest clean room at NASA Goddard Space Flight Center, Greenbelt, Md. Primary mirror segments stored in silver colored containers at top left. Technicians practice mirror installation on test piece of backplane (known as the BSTA or Backplane Stability Test Article) at center, 3 hexagonals.  Telescope assembly bays at right.  Credit: Ken Kremer- kenkremer.com
JWST pathfinder backplane has arrived here at NASA Goddard clean room.
JWST is being assembled here inside the world’s largest clean room at NASA Goddard Space Flight Center, Greenbelt, Md. Primary mirror segments stored in silver colored containers at top left. Technicians practice mirror installation on test piece of backplane (known as the BSTA or Backplane Stability Test Article) at center, 3 hexagonals. Pathfinder backplane has been hoisted into telescope assembly bays at right. Credit: Ken Kremer- kenkremer.com

The purpose is to gain invaluable experience practicing the delicate procedures required to precisely install the hexagonal shaped mirrors onto the actual flight backplane unit after it arrives.

The telescopes primary and secondary flight mirrors have already arrived at Goddard.

The mirrors must remained precisely aligned in space in order for JWST to successfully carry out science investigations. While operating at extraordinarily cold temperatures between -406 and -343 degrees Fahrenheit the backplane must not move more than 38 nanometers, approximately 1/1,000 the diameter of a human hair.

The backplane and every other component must function and unfold perfectly and to precise tolerances in space because JWST has not been designed for servicing or repairs by astronaut crews voyaging beyond low-Earth orbit into deep space, William Ochs, Associate Director for JWST at NASA Goddard told me in an interview during a visit to JWST at Goddard.

Watch this video showing movement of the pathfinder backplane into the Goddard cleanroom.

Video Caption: This is a time-lapse video of the center section of the ‘pathfinder’ backplane for NASA’s James Webb Space Telescope being moved into the clean room at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Credit: NASA/Chris Gunn

The actual flight backplane is comprised of three segments – the main central segment and a pair of outer wing-like parts which will be folded over into launch configuration inside the payload fairing of the Ariane V ECA booster rocket. The telescope will launch from the Guiana Space Center in Kourou, French Guiana in 2018.

Both the backplane flight unit and the pathfinder unit, which consists only of the center part, are being assembled and tested by prime contractor Northrop Grumman in Redondo Beach, California.

Gold coated flight spare of a JWST primary mirror segment made of beryllium and used for test operations inside the NASA Goddard clean room.  Credit: Ken Kremer- kenkremer.com
Gold coated flight spare of a JWST primary mirror segment made of beryllium and used for test operations inside the NASA Goddard clean room. Credit: Ken Kremer- kenkremer.com

The test unit was then loaded into a C-5, flown to the U.S. Air Force’s Joint Base Andrews in Maryland and unloaded for transport by trailer truck to NASA Goddard in Greenbelt, Maryland.

JWST is the successor to the 24 year old Hubble Space Telescope and will become the most powerful telescope ever sent to space.

Webb is designed to look at the first light of the Universe and will be able to peer back in time to when the first stars and first galaxies were forming.

A comparison of the primary mirror used by Hubble and the primary mirror array used by the James Webb Space Telescope. Photo Credit: NASA
A comparison of the primary mirror used by Hubble and the primary mirror array used by the James Webb Space Telescope. Photo Credit: NASA

The Webb Telescope is a joint international collaborative project between NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA).

NASA has overall responsibility and Northrop Grumman is the prime contractor for JWST.

Read my story about the recent unfurling test of JWST’s sunshade – here.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

The Webb telescope backplane "pathfinder" or practice-model was unloaded from a C-5 aircraft at the U.S. Air Force's Joint Base Andrews in Maryland.   Image Credit:   NASA/Desiree Stover
The Webb telescope backplane “pathfinder” or practice-model was unloaded from a C-5 aircraft at the U.S. Air Force’s Joint Base Andrews in Maryland. Image Credit: NASA/Desiree Stover

Artist’s concept of the James Webb Space Telescope (JWST) with Sunshield at bottom.  Credit: NASA/ESA
Artist’s concept of the James Webb Space Telescope (JWST) with Sunshield at bottom. Credit: NASA/ESA

James Webb Space Telescope’s Giant Sunshield Test Unit Unfurled First Time

The sunshield test unit on NASA's James Webb Space Telescope is unfurled for the first time. Credit: NASA

GODDARD SPACE FLIGHT CENTER, MD – The huge Sunshield test unit for NASA’s James Webb Space Telescope (JWST) has been successfully unfurled for the first time in a key milestone ahead of the launch scheduled for October 2018.

Engineers stacked and expanded the tennis-court sized Sunshield test unit last week inside the cleanroom at a Northrop Grumman facility in Redondo Beach, California.

NASA reports that the operation proceeded perfectly the first time during the test of the full-sized unit.

The Sunshield and every other JWST component must unfold perfectly and to precise tolerances in space because it has not been designed for servicing or repairs by astronaut crews voyaging beyond low-Earth orbit into deep space, William Ochs, Associate Director for JWST at NASA Goddard told me in an exclusive interview.

Artist’s concept of the James Webb Space Telescope (JWST) with Sunshield at bottom.  Credit: NASA/ESA
Artist’s concept of the James Webb Space Telescope (JWST) with Sunshield at bottom. Credit: NASA/ESA

The five layered Sunshield is the largest component of the observatory and acts like a parasol.

Its purpose is to protect Webb from the suns heat and passively cool the telescope and its quartet of sensitive science instruments via permanent shade to approximately 45 kelvins, -380 degrees F, -233 C.

The kite-shaped Sunshield provides an effective sun protection factor or SPF of 1,000,000. By comparison suntan lotion for humans has an SPF of 8 to 40.

Two sides of the James Webb Space Telescope (JWST). Credit: NASA
Two sides of the James Webb Space Telescope (JWST). Credit: NASA

The extreme cold is required for the telescope to function in the infrared (IR) wavelengths and enable it to look back in time further than ever before to detect distant objects.

The shield separates the observatory into a warm sun-facing side and a cold anti-sun side.

Its five thin membrane layers also provides a stable thermal environment to keep the telescopes 18 primary mirror segments properly aligned for Webb’s science investigations.

JWST is the successor to the 24 year old Hubble Space Telescope and will become the most powerful telescope ever sent to space.

The Webb Telescope is a joint international collaborative project between NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA).

NASA has overall responsibility and Northrop Grumman is the prime contractor for JWST.

Webb will launch folded up inside the payload fairing of an ESA Ariane V ECA rocket from the Guiana Space Center in Kourou, French Guiana.

In launch configuration, the Sunshield will surround the main mirrors and instruments like an umbrella.

During the post launch journey to the L2 observing orbit at the second Sun-Earth Lagrange point nearly a million miles (1.5 million Km) from Earth, the telescopes mirrors and sunshield will begin a rather complex six month long unfolding and calibration process.

The science instruments have been mounted inside the ISIM science module and are currently undergoing critical vacuum chamber testing at NASA Goddard Space Flight Center which provides overall management and systems engineering.

Gold coated flight spare of a JWST primary mirror segment made of beryllium and used for test operations inside the NASA Goddard clean room.  Credit: Ken Kremer- kenkremer.com
Gold coated flight spare of a JWST primary mirror segment made of beryllium and used for test operations inside the NASA Goddard clean room. Credit: Ken Kremer- kenkremer.com

The mirror segments have arrived at NASA Goddard where I’ve had the opportunity to observe and report on work in progress.

Stay tuned here for Ken’s continuing JWST, MMS, ISS, Curiosity, Opportunity, SpaceX, Orbital Sciences, Boeing, Orion, MAVEN, MOM, Mars and more Earth and Planetary science and human spaceflight news.

Ken Kremer

Sunshield test unit on NASA's James Webb Space Telescope is unfurled for the first time at Northrup Grumman.  Credit: NASA
Sunshield test unit on NASA’s James Webb Space Telescope is unfurled for the first time at Northrup Grumman. Credit: NASA

Happy Easter Sunday from the ISS ! Crew Hunts Easter Eggs & Goodies

ISS Commander Chris Hadfield plans surprise Easter egg hunt for station crew today. Credit: NASA/Chris Hadfield

ISS Commander Chris Hadfield plans surprise Easter egg hunt for station crew today – Easter Sunday, March 31, 2013. Credit: NASA/Chris Hadfield
Updated with more astounding ‘Easter from Space’ photos by Chris Hadfield !
Dont miss the scrumptious ‘Easter Finale’ – below

Thank you Chris ![/caption]

Hush, hush !

Don’t’ tell his crew, but Canadian astronaut Chris Hadfield has secretly planned a delightful space station surprise sure to also warm the hearts of Earth’s children celebrating the joyous occasion of this Easter Sunday – and there’s delicious photos below too.

They’re going on an Easter egg hunt !

“Don’t tell my crew, but I brought them Easter Eggs :)”, tweeted Hadfield from the ISS – where he currently serves as Commander of the Expedition 35 crew.

And Hadfield sends his greetings and ‘Easter from Space’ photos to all of us down here on the good Earth on this Holy Day.

“Good Morning, Earth! A fine Easter Sunday morning to you, from the crew of the International Space Station.”

You can follow along with Hadfield’s adventures from space as – @Cmdr_Hadfield

A Full Moon. It may not be made of chocolate, but it makes for a wonderfully natural Easter egg. Credit: NASA/Chris Hadfield
A Full Moon. It may not be made of chocolate, but it makes for a wonderfully natural Easter egg. Credit: NASA/Chris Hadfield

Occasionally, Mission Control relents and lets the astronauts have fun, taking a break from their out of this world chores.

But given the weightless of space, it’s not obvious how they’ll accomplish the traditional Easter egg roll. Perhaps we’ll hear about that later.

And there’s no word back yet on Easter Bunny sightings.

Well, to get ready Hadfield has been busy stashing assorted Easter goodies & gifts in the gazillion nooks and crannies aboard the ISS – and snapping fun photos for all the kids to play along.

“Sometimes the best place to hide an item is floating right above your nose. Or in this case, your sleep pod.”

This sleep pod apparently makes for a great hiding spot for Easter eggs and gift baskets on the ISS. Credit: NASA
This sleep pod apparently makes for a great hiding spot for floating Easter eggs and gift baskets on the ISS. Credit: NASA

Hadfield just couldn’t resist the temptation of some weightless juggling – and he’s not telling if they went .. splat !!

“It appears that I’m as bad at juggling in weightlessness as I am on Earth. Hopefully I’m better at hiding them… ”

Canadian astronaut Chris Hadfield attempts to juggle Easter eggs aboard the International Space Station. Do they go splat ??. Credit: NASA
Canadian astronaut Chris Hadfield attempts to juggle Easter eggs aboard the International Space Station. Do they go splat ??. Credit: NASA

Time will tell whether the crew of six guys are indeed clever enough to figure out all the secret hiding spots.

The Easter egg hunt could be especially trying for the three ‘new guys’ who just arrived on Thursday, March 28, on the Russian Soyuz express capsule – comprising of Russian cosmonauts Pavel Vinogradov and Alexander Misurkin and NASA astronaut Chris Cassidy. They join Hadfield, astronaut Tom Marshburn and cosmonaut Roman Romanenko who will stay aboard the station until May.

In the meantime, Hadfield is playfully diverting everyone’s concentration with gorgeous shots of Earth, like the Easter sunrise glinting across North America’s heartland – below.

An Easter sunrise glints across the Great Lakes. Heartland watershed. Credit: NASA/Chris Hadfield
An Easter sunrise glints across the Great Lakes. Heartland watershed. Credit: NASA/Chris Hadfield

And the Canadian Space Agency has now passed along an Easter greeting card.

Astronaut and cosmonaut crews have a decade’s long tradition of celebrating religious holidays in space. Probably the most famous occasion was when the three man American crew of Apollo 8 read scriptures from Genesis marking the first time in history that humans were orbiting the Moon – back in 1968.

All in all it’s been a busy week aboard the massive orbiting lab complex.

On Tuesday, March 26, the SpaceX Dragon capsule departed the station, loaded with a long awaited trove of science goodies and successfully splashed down in the ocean. Two days later the trio of new space men arriving aboard the Soyuz restored the ISS to its full crew complement of six.

Since arriving at the station just before Christmas 2012, Hadfield has been doing a stellar job enlightening folks about what it’s like to live and work in space in fun and understandable ways.

Happy Easter !

Ken Kremer

Easter Finale: The Sun, a bright point of light surrounded by profound blackness, our world glowing in-between. Credit: NASA/Chris Hadfield
Easter Finale: The Sun, a bright point of light surrounded by profound blackness, our world glowing in-between. Credit: NASA/Chris Hadfield

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Learn more about the ISS, Curiosity, SpaceX, Antares, and NASA missions at Ken’s upcoming lecture presentations:

April 20/21 : “Curiosity and the Search for Life on Mars – (in 3-D)”. Plus Orion, SpaceX, Antares, ISS, the Space Shuttle and more! NEAF Astronomy Forum, Suffern, NY

April 28: “Curiosity and the Search for Life on Mars – (in 3-D)”. Plus the Space Shuttle, SpaceX, Antares, Orion and more. Washington Crossing State Park, Titusville, NJ, 130 PM

Another Amazing Earth View: The Andes Under a Blue Pacific Fog

View of the Andes from the ISS on Feb. 4, 2013 (NASA)

Even though he’s a busy guy, Expedition 34 astronaut Chris Hadfield still takes the time to share some of his amazing views from orbit aboard the ISS. One of his most recent photos is this stunning view of Andean ridges rising up from a blue haze of Pacific fog, the arc of Earth’s horizon in the distance. Gorgeous! (Edit: according to a labeled image by Peter Caltner, this is looking southeast into northern Argentina – no Pacific in view. So the haze is coming from the valley, not the ocean.)

Shared on Twitter at 6:25 p.m. EST, this has quickly become one of Hadfield’s more popular images — and for good reason. In fact sometimes it’s hard to keep up with this high-flying Canadian, who easily posts half a dozen or more photos from all across the world every day on Twitter, Facebook, and his Google+ profile (which is managed by his son Evan.) But since the ISS goes around the globe 16 times a day, there’s certainly no shortage of sights for Chris and the Exp. 34 crew!

Check out a few more of Chris Hadfield’s recent photos below:

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The Mississippi delta deposits “the soil of America’s heartland” into the Gulf of Mexico (NASA)

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“It’s a bird, it’s a plane… it’s a river in South America!” tweeted Hadfield. (Actually it’s looking west along the Rio São Francisco river in Brazil.) NASA

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Chesapeake Bay from orbit. “You can even see the causeway,” Hadfield noted. (NASA)

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On Feb. 2, Hadfield took this photo of storm clouds over Africa. “My breath was taken away,” he wrote. (NASA)

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Toronto on the shore of Lake Ontario, “Canada’s most populous city” (NASA)

Want to see more of Chris Hadfield’s images from orbit? Follow him on Twitter and Facebook and over on Google+. (Just don’t be surprised if you find yourself changing your desktop background a lot more often!)

And for even more space adventures, tune in to the CSA website on February 7 at 10:30 a.m. EST when Col. Hadfield will have a live chat with William Shatner, building upon their brief (but immensely popular) impromptu web conversation from last month. He’ll also be taking questions from “space tweeps” on-site at CSA.

Sounds of the Space Station

Canadian Space Agency astronaut Chris Hadfield uses a camera to photograph the topography of a point on Earth from a window in the Cupola of the International Space Station. Credit: NASA

CSA astronaut Chris Hadfield strums some chords in the cupola (NASA)

You’ve probably seen plenty of photos of astronauts and cosmonauts working aboard the International Space Station, and maybe even some videos of ISS briefings and interviews and tours throughout the different modules (and perhaps even an astronaut-produced song or two.) But have you ever wondered what the average, everyday sounds inside Station are like?

If so, Canadian astronaut and Expedition 34 flight engineer Chris Hadfield has an earful for you.

To share his ISS experience past mere pixels, Hadfield has posted some recordings on Soundcloud taken from various locations around Station, giving an idea of the many ambient noises found inside humanity’s orbiting “place in space.” (But if you think it sounds anything like the bridge of the U.S.S. Enterprise, you may be in for a surprise.)

iss034e010603Here’s just a few of the recordings Hadfield has posted (you’ll have to click each to play in Soundcloud):

Ambient Noise of the Space Station

Station Noises and Sounds

Russian Segment Handrails

Soyuz Orbital Module

And here’s one that really doesn’t sound like anything on Earth: Toilet Starting on Station

So even though life on the ISS might not sound like what you’d first imagine in a spaceship or have a dramatic score to accompany its soaring adventures around the world, it certainly has a unique sound all its own (and sometimes the astronauts do get to add their own original soundtrack too.)

Space Folk

Chris may have founded a new music genre: “Space Folk”

Listen to more sounds of the Station on Chris Hadfield’s Soundcloud page here.

Inset image: Chris Hadfield poses with a Materials Science Laboratory Furnace Launch Support Structure (FLSS) in the Destiny laboratory of the International Space Station. NASA astronaut Tom Marshburn, flight engineer, uses a computer in the background.

Russia’s Soyuz Spacecraft: 46 Years and Still Soaring High


In just a couple of days a Soyuz rocket will lift off from the Baikonur Cosmodrome, carrying NASA astronaut Tom Marshburn, Canadian Space Agency astronaut Chris Hadfield, and Russian Federal Space Agency cosmonaut Roman Romanenko within the TMA-07M capsule on a two-day trip to the ISS. While many improvements have been made to the Soyuz rockets and spacecraft since the first launch in 1966, the bottom line is that the Soyuz have become the world’s most used launch vehicles due to their consistent performance and relatively low cost.

Here, CSA astronaut Chris Hadfield talks about the Soyuz, briefly describing the strengths of the Russian technology that will once again take him and fellow Expedition 34/35 crew members to the ISS, where in March of next year he will become the first Canadian to take command of the Station.

“This is a safe and reliable and proven way to leave the Earth, and each successive Soyuz is different; each one has small changes. The role of the astronaut is to learn those small changes… and learn to apply them.”

– Canadian astronaut Chris Hadfield

The T version of the Soyuz craft began flying manned missions in 1980 and in 1986 the TM versions were transporting crews to Mir. The TMA upgrade addressed previous astronaut/cosmonaut height restrictions and permits the Soyuz to be used as a lifeboat for ISS crews, if necessary.

Find out more about the long history of the Soyuz spacecraft here, and read more about today’s Soyuz rollout here.

Video: CSA. Inset image: NASA/Carla Cioffi

Canada Unveils its Contributions to the JWST

Today Canada’s Minister of Industry Christian Paradis unveiled the technologies that comprise Canada’s contribution to the James Webb Space Telescope, a next-generation infrared observatory that’s seen as the successor to Hubble.


CSA will provide JWST with a two-in-one instrument: a Fine Guidance Sensor (FGS) Near-Infrared Imager and Slitless Spectrograph (NIRISS). Both were designed, built and tested by COM DEV International in Ottawa and Cambridge, Ontario, with technical contributions from the Université de Montréal and the National Research Council Canada.

Read: Watch the James Webb Being Built via “Webb-Cam”

“Canada has a proud legacy in space and we are once again pushing the frontier of what is possible. These two outstanding technologies are perfect examples of how Canada has secured its world-class reputation. Our Government is committed to ensuring the long-term competitiveness and prosperity of such a vital economic sector.”
– The Honourable Christian Paradis

The FGS consists of two identical cameras that are critical to Webb’s ability to “see.” Their images will allow the telescope to determine its position, locate its celestial targets, and remain pointed to collect high-quality data. The FGS will guide the telescope with incredible precision, with an accuracy of one millionth of a degree.

The NIRISS will have unique capabilities for finding the earliest and most distant objects in the Universe’s history. It will also peer through the glare of nearby young stars to unveil new Jupiter-like exoplanets. It will have the capability of detecting the thin atmosphere of small, habitable, earth-like planets and determine its chemical composition to seek water vapour, carbon dioxide and other potential biomarkers such as methane and oxygen.

The FGS/NIRISS instruments can be seen in this development video from CSA:

“Imagine the challenge at hand here: to design and deliver technology capable of unprecedented levels of precision to conduct breakthrough science on board the largest, most complex and most powerful telescope ever built,” said Steve MacLean, President of the CSA. “The Webb telescope will be located 1.5 million kilometers from Earth— too far to be serviced by astronauts like Hubble was. At that distance, the technology simply has to work. This is the outstanding level of excellence Canadians are capable of achieving. It’s something for all of us to be proud of.”

The instruments will be delivered to NASA on July 30.

Read more on the CSA press release here, and learn more about the James Webb here.

Images/video: CSA and NASA

Awesome Map of Space Agencies Around the World

When you think of space agencies around the world, what comes to mind? Probably NASA, ESA, ISRO and JAXA are the acronyms you know; then there’s the Russian Federal Space Agency, the Canadian Space Agency, and the China National Space Agency. But did you know there are dozens of countries with space agencies, with nearly 200 space agencies and centers around the world? Blogger Heather Archuletta has put together a map and list of all the space agencies on the planet, including countries you may not have realized had a space agency such as Argentina, Bulgaria, Pakistan Morocco, and more. The list includes links to all the space agency’s websites and a link to an interactive Google Map. The immediate thought that came to mind, which Heather shared on Twitter was, ROAD TRIP!

For any space nerd, that would be the ultimate global trek, to visit every space agency in the world. With all the NASA and Russian centers and all the various countries in ESA, your trip would include 198 locations around our planet!

Heather is known for her Pillownaut blog which originally detailed her time participating in NASA bedrest studies to simulate long duration spaceflight. The space agency map was a new project, born from a conversation with a friend.

“Overall, I created it to be a tracking tool, and to show how huge the space industry has become,” Heather told Universe Today. “Many people think of the space game as being the US, Russia and a handful of Europeans… but truly, lifestyle in many countries is dependent upon the use of space, even if it’s just as simple as remote sensing or collaborative satellites.”

Heather noted that the map includes one site in India that is not operational yet, but built.

But consider how many jobs around the world have been created because of space exploration… and these jobs employ some of the best and brightest minds in forward-thinking, global-enriching ways. And even more, there’s now the burgeoning private space industry that is employing even more people with jobs that focus on the future.

Check out http://pillownaut.com/spacemap/spacemap.html and plan your space-nerd road trip today!