A nebula (seen in cyan) that is about two million light-years across. It was found surrounding the bright quasar UM287 (center). Credit: S. Cantalupo (UCSC)
Funny how a single quasar can illuminate — literally and figuratively — some of the mysteries of the universe. From two million light-years away, astronomers spotted a quasar (likely a galaxy with a supermassive black hole in its center) shining on a nearby collection of gas or nebula. The result is likely showing off the filaments thought to connect galaxies in our universe, the team said.
“This is a very exceptional object: it’s huge, at least twice as large as any nebula detected before, and it extends well beyond the galactic environment of the quasar,” stated Sebastiano Cantalupo, a postdoctoral fellow at the University of California Santa Cruz who led the research.
The find illuminated by quasar UM287 could reveal more about how galaxies are connected with the rest of the “cosmic web” of matter, astronomers said. While these filaments were predicted in cosmological simulations, this is the first time they’ve been spotted in a telescope.
“Gravity causes ordinary matter to follow the distribution of dark matter, so filaments of diffuse, ionized gas are expected to trace a pattern similar to that seen in dark matter simulations,” UCSC stated.
A graphic showing how matter in the universe could be distributed. Some astronomers believe matter is sprinkled as a a “cosmic web” of filaments. The larger section shows a dark-matter simulation (by Anatoly Klypin and Joel Primack) and the inset a smaller portion, 10 million light-years across, from another simulation that also includes gas (S. Cantalupo). Credit: S. Cantalupo (UCSC), Joel Primack (UCSC) and Anatoly Klypin (NMSU).
Astronomers added that it was lucky that the quasar happened to be shining in the right direction to illuminate the gas, acting as a sort of “cosmic flashlight” that could show us more of the underlying matter. UM287 is making the gas glow in a similar way that fluorescent light bulbs behave on Earth, the team added.
“This quasar is illuminating diffuse gas on scales well beyond any we’ve seen before, giving us the first picture of extended gas between galaxies,” stated J. Xavier Prochaska, coauthor and professor of astronomy and astrophysics at UC Santa Cruz. “It provides a terrific insight into the overall structure of our universe.”
NASA's Opportunity Mars rover recorded the component images for this self-portrait near the peak of Solander Point and about three weeks before completing a decade of work on Mars. The rover's panoramic camera (Pancam) took the images during the interval Jan. 3, 2014, to Jan. 6, 2014. Credit: NASA/JPL-Caltech/Cornell/Arizona State University
Want to get an engineer excited? Give them a challenge. And the Opportunity rover has provided plenty of challenges in the past 10 years on Mars. Fun challenges, though; amazing tests of wit and skill, doing repairs on a rover that is sometimes a hundred million kilometers away. But with the longevity of the rovers also comes some amazing science.
The Opportunity rover is celebrating ten years on Mars. While the rovers were designed for about 1 kilometer of odometry, Oppy has now traveled 38.7 kilometers (24 miles). At yesterday’s briefing, the rover scientists and engineers said Opportunity is still in very good health and still is scientifically productive.
In the recent “selfie” image below, you can see how the rover is covered with dust, almost perfectly camouflaged with its environment. That montage was taken a few weeks ago, but recently there have been some wind cleaning events that have dusted off the solar panels, improving the solar power from 47% to 60%, which is higher than it has been through the past two Martian winters. This means they can continue to drive and explore even more, perhaps even during the upcoming winter.
Dust covering the rovers’ solar panels was one of the reasons that the initial estimates of the rovers’ life was only for 90 days. The dust cleaning events have been an unexpected benefit that has allowed for the long missions for the MER rovers.
Beyond the scientific findings of potential habitability announced yesterday, John Callas, project manager for the Mars Exploration Rovers said both Spirit and Opportunity have given us a great intangible.
“Through these rovers our species has gone to work on Mars, and now a generation has grown up with these rovers and have been inspired by them,” Callas said. “Because of these rovers Earthlings have become Martians too, dual citizens, if you will. We now live in a larger world, a world than now extends beyond our own home planet these rovers have made Mars our neighborhood and our backyard, something truly remarkable.”
Dots (circled) in this image show the first asteroid spotted by NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) after the mission came out of hibernation. Credit: NASA
If anything, NASA’s asteroid-hunting spacecraft seems to be refreshed after going into forced hibernation for 2.5 years. In the first 25 days since it started seeking small solar system bodies in earnest again, the Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) found three new objects and detected an additional 854, NASA said Thursday (Jan. 23).
Luckily for people interested in this field, Amy Mainzer (the principal investigator for this mission) has been tweeting out discoveries as they come — and other observations besides. “Just passed our @WISE_Mission post-restart review. I believe the technical term is “Yee haw!!” she wrote Jan. 21. Below are a couple of illustrated examples of discoveries from her Twitter feed. Click on the pictures for larger versions.
In a release, NASA added that NEOWISE is “observing and characterizing” one NEO a day, which means not only looking at the object, but probing its size and composition. Astronomers know of about 10,500 NEOs, but of those only 10% (or about 1,500) have physical measurements cataloged as well. NEOWISE investigators aim to make hundreds of more of these measurements.
The mission (originally called WISE) launched in December 2009 to examine the universe in infrared light. After completely mapping the sky, it ran out of coolant it needed to do this work in 2010. It then shifted to examining comets and asteroids before being put into hibernation in February 2011. Read more about its mission history in this past Universe Today article.
A direct image of a brown dwarf companion (arrowed) taken at the Keck Observatory. (Credit: Crepp et al. 2014 APJ).
A recent find announced by astronomers may go a long ways towards understanding a crucial “missing link” between planets and stars.
The team, led by Friemann Assistant Professor of Physics at the University of Notre Dame’s Justin R. Crepp, recently released an image of a brown dwarf companion to a star 98 light years or 30 parsecs distant. This discovery marks the first time that a T-dwarf orbiting a Sun-like star with known radial velocity acceleration measurement has been directly imaged.
Located in the constellation Eridanus, the object weighs in at about 52 Jupiter masses, and orbits a 0.95 Sol mass star 51 Astronomical Units (AUs) distant once every 320-1900 years. Note that this wide discrepancy stems from the fact that even though we’ve been following the object for some 17 years since 1996, we’ve yet to ascertain whether we’ve caught it near apastron or periastron yet: we just haven’t been watching it long enough.
The T-dwarf, known as HD 19467 B, may become a benchmark in the study of sub-stellar mass objects that span the often murky bridge between true stars shining via nuclear fusion and ordinary high mass planets.
Brown dwarfs are classified as spectral classes M, L, T, and Y and are generally quoted as having a mass of between 13 to 80 Jupiters. Brown dwarfs utilize a portion of the proton-proton chain fusion reaction to create energy, known as deuterium burning. Low mass red dwarf stars have a mass range of 80 to 628 Jupiters or 0.75% to 60% the mass of our Sun. The Sun has just over 1,000 times Jupiter’s mass.
Researchers used data from the TaRgeting bENchmark-objects with Doppler Spectroscopy (TRENDS) high-contrast imaging survey, and backed it up with more precise measurements courtesy of the Keck observatory’s High-Resolution Echelle Spectrometer or HIRES instrument.
An artist’s conception of a T-type brown dwarf. (Credit: Tyrogthekreeper under a Wikimedia Commons Attribution-Share Alike 3.0 Unported license).
TRENDS uses adaptive optics, which relies on precise flexing the telescope mirror several thousands of times a second to compensate for the blurring effects of the atmosphere. Brown dwarfs shine mainly in the infrared, and objects such as HD 19467 B are hard to discern due to their close proximity to their host star. In this particular instance, for example, HD 19467 B was over 10,000 times fainter than its primary star, and located only a little over an arc second away.
“This object is old and cold and will ultimately garner much attention as one of the most well-studied and scrutinized brown dwarfs detected to date,” Crepp said in a recent Keck observatory press release. “With continued follow-up observations, we can use it as a laboratory to test theoretical atmospheric models. Eventually we want to directly image and acquire the spectrum of Earth-like planets. Then, from the spectrum, we should be able to tell what the planet is made of, what its mass is, radius, age, etc… basically all of its relevant properties.
Discovery of an Earth-sized exoplanet orbiting in a star’s habitable zone is currently the “holy grail” of exoplanet science. Direct observation also allows us to pin down those key factors, as well as obtain a spectrum of an exoplanet, where detection techniques such as radial velocity analysis only allow us to peg an upper mass limit on the unseen companion object.
This also means that several exoplanet candidates in the current tally of 1074 known worlds beyond our solar system also push into the lower end of the mass limit for substellar objects, and may in fact be low mass brown dwarfs as well.
Another key player in the discovery was the Near-Infrared Camera (second generation) or NIRC2. This camera works in concert with the adaptive optics system on the Keck II telescope to achieve images in the near infrared with a better resolution than Hubble at optical wavelengths, perfect for brown dwarf hunting. NIRC2 is most well known for its analysis of stellar regions near the supermassive black hole at the core of our galaxy, and has obtained some outstanding images of objects in our solar system as well.
The hexagonal primary mirror of the Keck II telescope. (Credit: SiOwl. A Wikimedia Commons image under a Creative Commons Attribution 3.0 Unported license).
What is the significance of the find? Free floating “rogue” brown dwarfs have been directly imaged before, such as the pair named WISE J104915.57-531906 which are 6.5 light years distant and were spotted last year. A lone 6.5 Jupiter mass exoplanet PSO J318.5-22 was also found last year by the PanSTARRS survey searching for brown dwarfs.
“This is the first directly imaged T-dwarf (very cold brown dwarf) for which we have dynamical information independent of its brightness and spectrum,” team lead researcher Justin Crepp told Universe Today.
Analysis of brown dwarfs is significant to exoplanet science as well.
“They serve as an essential link between our understanding of stars and planets,” Mr. Crepp said. “The colder, the better.”
And just as there has been a controversy over the past decade concerning “planethood” at the low end of the mass scale, we could easily see the debate applied to the higher end range, as objects are discovered that blur the line… perhaps, by the 23rd century, we’ll finally have a Star Trek-esque classifications scheme in place so that we can make statements such as “Captain, we’ve entered orbit around an M-class planet…”
Something that’s always been fascinating in terms of red and brown dwarf stars is also the possibility that a solitary brown dwarf closer to our solar system than Alpha Centauri could have thus far escaped detection. And no, Nibiru conspiracy theorists need not apply. Mr. Crepp notes that while possible, such an object is unlikely to have escaped detection by infrared surveys such as WISE. But what a discovery that’d be!
As you’ve probably seen, we’ve been releasing our Guide to Space videos on Universe Today for the last 9 months or so. We’ve been using YouTube, but lots of people have asked for a downloadable, podcastesque version that they can download automatically to their portable device.
We’ve gone ahead and fulfilled your request, uploading all our videos to archive.org, and then made the podcast feeds available for subscription or though iTunes. We’ve got a full video feed and then a full audio feed, so you can get the shows you want, how you want them.
Currently, we’ve only put up the shorter Guide to Space videos, but once we feel this is under control, we’ll add the other shows, like the Weekly Space Hangout and the Virtual Star Party. We’re going to try implementing categories, so you only download the shows you want.
The dual Atlas V rocket engines roar to life on a United Launch Alliance Atlas V rocket at Cape Canaveral Air Force Station's Space Launch Complex 41. The launch vehicle will boost NASA's Tracking and Data Relay Satellite, or TDRS-L, spacecraft to Earth orbit. Liftoff was at 9:33 p.m. EST on Jan. 23, 2014. Credit: NASA
The dual Atlas V rocket engines roar to life on a United Launch Alliance Atlas V rocket at Cape Canaveral Air Force Station’s Space Launch Complex 41. The launch vehicle will boost NASA’s Tracking and Data Relay Satellite, or TDRS-L, spacecraft to Earth orbit. Liftoff was at 9:33 p.m. EST on Jan. 23, 2014.
Credit: NASA Story updated[/caption]
A spectacular nighttime blastoff lit up the evening skies for hundreds of miles around the Florida Space coast on a mission that sent a critical NASA communications relay satellite to orbit this evening, Jan. 23.
NASA’s huge Tracking and Data Relay Satellite L (TDRS-L) is now safely in orbit following tonight’s successful launch aboard a United Launch Alliance Atlas V rocket from Cape Canaveral Air Force Station in Florida.
The Atlas V rocket was launched at 9:33 p.m. EST from Space Launch Complex 41 into crystal clear skies that gave excited spectators an uncommonly long and stunning launch spectacle that was well worth the wait.
The 3.8 ton TDRS-L satellite will become part of a network providing high-data-rate communications to the International Space Station (ISS), Hubble Space Telescope, launch vehicles and a host of other research spacecraft that relay absolutely critical flight, telemetry and science data.
Water reflection shot of NASA TDRS-L satellite launch aboard Atlas V rocket on Jan. 23, 2014. Credit: Walter Scriptunas II – www.scriptunasimages.com
The ISS, Hubble and all these other spacecraft could not function without the TDRS network of relay satellites.
Liftoff of NASA”s TDRS-L atop Atlas V rocket on Jan. 23, 2014 from CAPE CANAVERAL, Fla. Credit: NASA
The TDRS-L satellite will also be used to track and relay vital information for the maiden launch of NASA’s next generation Orion human spaceflight capsule slated for Fall 2014.
“TDRS-L and the entire TDRS fleet provide a vital service to America’s space program by supporting missions that range from Earth-observation to deep space discoveries,” said NASA Administrator Charles Bolden.
“TDRS also will support the first test of NASA’s new deep space spacecraft, the Orion crew module, in September. This test will see Orion travel farther into space than any human spacecraft has gone in more than 40 years.”
A United Launch Alliance (ULA) Atlas V rocket successfully launched NASA’s Tracking and Data Relay Satellite (TDRS-L) payload at 9:33 p.m. EST today from Space Launch Complex-41. Credit: Ben Cooper/Launch photography
TDRS-L arrived in geosynchronous transfer orbit about two hours after liftoff. It will orbit at an altitude of 22,300 miles.
The venerable Atlas V rocket is one of the most reliable and well built rockets in the world.
Indeed the Atlas V has been entrusted to launch many high value missions for NASA and the Defense Department- such as Curiosity, JUNO and the X-37 B.
Clear of the lightning wires, the Atlas 5-401 accelerates to orbit. Credit: nasatech.net
The last Atlas V launch from the Cape occurred in November 2013 and sent NASA’s MAVEN Mars orbiter on a voyage to the Red Planet.
NASA’s Mars bound MAVEN spacecraft launches atop Atlas V booster at 1:28 p.m. EST from Space Launch Complex 41 at Cape Canaveral Air Force Station on Nov. 18, 2013. Image taken from the roof of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center. Credit: Ken Kremer/kenkremer.com
And the two stage rocket is being man-rated right now to launch humans to low Earth orbit in the near future.
The Atlas V has been chosen to launch two of the upcoming astronaut ‘space taxis’ as part of NASA’s commercial crew initiative to launch human crews to the International Space Station.
Just today, Sierra Nevada Corp announced that their Dream Chaser mini shuttle will launch to orbit on its first flight on Nov. 1, 2016.
TDRS-L is the 12th in this series of communications satellites.
It is identical to the TDRS-K spacecraft launched in 2013, which was the first of the third generation of TDRS satellites.
They were built by Boeing Space and Intelligence Systems of El Segundo, Calif., and have a 15 year design lifetime.
NASA will now conduct a three month in orbit checkout.
TDRS-M, the next spacecraft in this series, is on track to be ready for launch in late 2015.
TDRS-L awaits launch atop Atlas V rocket. Credit: Mike Killian/mikekillianphotography.com
This is the third generation of TDRS satellites.
“The TDRS fleet began operating during the space shuttle era with the launch of TDRS-1 in 1983. Of the 11 TDRS spacecraft placed in service to date, eight still are operational. Four of the eight have exceeded their design life,” said NASA.
The Atlas V launched in the 401 configuration vehicle, which includes a 4-meter diameter payload fairing and no solid rocket motors. The first stage was powered by the RD AMROSS RD-180 engine. The Centaur upper stage was powered by a single Aerojet Rocketdyne RL10A-4 engine.
Stay tuned here for Ken’s continuing Orion, Chang’e-3, Orbital Sciences, SpaceX, commercial space, LADEE, Mars and more news.
Pictured in Astrotech’s payload processing facility on 3 January 2014, TDRS-L resembles an enormous insect and will form the 12th member of NASA’s Tracking and Data Relay Satellite family. Photo Credit: Mike Killian Photography/AmericaSpacePhoto Credit: Alan Walters / AmericaSpace
Pancam false-color view acquired on Sol 3066 (Sept. 8 2012) of fine-scale layering in the Whitewater Lake locality that is indicative of an ancient aqueous environment on Mars. Veneers have been resistant to wind erosion and enhanced the layered appearance of the outcrop. Layers are typically several millimeters thick. Credit: NASA/JPL-Caltech/Cornell/Arizona State University
After a decade of roving relentlessly on the Red Planet, NASA’s Opportunity rover discovered rocks that preserve the best evidence yet that ancient Mars was the most conducive time period for the formation of life on our Solar System’s most Earth-like Planet, according to the science leaders of the mission.
Opportunity found the rocks – laden with clay minerals – barely over half a year ago in the spring of 2013, at an outcrop named ‘Whitewater Lake’ along an eroded segment of a vast crater named Endeavour that spans some 22 kilometers (14 miles) in diameter.
“These rocks are older than any we examined earlier in the mission, and they reveal more favorable conditions for microbial life than any evidence previously examined by investigations with Opportunity,” says Opportunity Deputy Principal Investigator Ray Arvidson, a professor at Washington University in St. Louis.
Opportunity investigated the rocks at a spot dubbed Matejivic Hill where researchers believe iron-rich smectite was produced in an aqueous environment some 4 billion years ago that was relatively benign and with a nearly neutral pH – thus offering potential life forms a habitable zone with a far better chance to originate and thrive for perhaps as long as hundreds of millions of years.
The new scientific findings are being published in the journal Science on Jan. 24, which just happens to exactly coincide with Opportunity’s landing on the Red Planet ten years ago at Meridiani Planum.
Matejivic Hill is located on the Cape York rim segment of Endeavour crater. See locations on our Opportunity route map below.
“The punch line here is that the oldest rocks Opportunity has examined were formed under very mild conditions — conditions that would have been a much better niche for life, and also much better for the preservation of organic materials that would have been produced,” said Arvidson at a NASA media briefing today, Jan. 23.
Opportunity rover discovered phyllosilicate clay minerals and calcium sulfate veins at the bright outcrops of ‘Whitewater Lake’, at right, imaged by the Navcam camera on Sol 3197 (Jan. 20, 2013, coinciding with her 9th anniversary on Mars. “Copper Cliff” is the dark outcrop, at top center. Darker “Kirkwood” outcrop, at left, is site of mysterious “newberries” concretions. This panoramic view was snapped from ‘Matijevic Hill’ on Cape York ridge at Endeavour Crater. Credit: NASA/JPL-Caltech/Cornell/Marco Di Lorenzo/Ken Kremer
Immediately after landing on Mars on Jan.24, 2004 inside Eagle crater, the six wheeled robot found rocks within her eyesight that provided concrete evidence that eons ago Mars was much warmer and wetter compared to the cold, arid conditions that exist today.
Although those sulfate rich rocks proved that liquid water once flowed on the surface of the Red Planet, they also stem from a time period with a rather harsh environment that was extremely acidic, containing significant levels of sulfuric acid that would not be friendly to the formation or sustainability of potential Martian life forms.
“Evidence is thus preserved for water-rock interactions of the aqueous environments of slightly acidic to circum-neutral pH that would have been more favorable for prebiotic chemistry and microorganisms than those recorded by younger sulfate-rich rocks at Meridiani Planum,” Ardivson wrote in the Science paper, of which he is the lead author, along with many other team members.
NASA’s Opportunity Mars rover recorded the component images for this self-portrait near the peak of Solander Point and about three weeks before completing a decade of work on Mars. The rover’s panoramic camera (Pancam) took the images during the interval Jan. 3, 2014, to Jan. 6, 2014. Credit: NASA/JPL-Caltech/Cornell/Arizona State University
The science team directed Opportunity to Matejivic Hill and the ‘Whitewater Lake’ area of outcrops based on predictions from spectral observations collected from the CRISM spectrometer aboard one of NASA’s spacecraft circling overhead the Red Planet – the powerful Mars Reconnaissance Orbiter (MRO).
Opportunity arrived at Mars barely 3 weeks after her twin sister, Spirit on 3 January 2004.
The long lived robot has been methodically exploring along the rim of Endeavour crater since arriving in August 2011.
The newly published results from Opportunity correlate very well with those from sister rover Curiosity which likewise found a habitable zone where drinkable water once flowed on the opposite side of Mars.
The combined discoveries from the golf cart sized Opportunity and the SUV sized Curiosity tell us that the presence of liquid water was widespread on ancient Mars.
“The more we explore Mars, the more interesting it becomes. These latest findings present yet another kind of gift that just happens to coincide with Opportunity’s 10th anniversary on Mars,” said Michael Meyer, lead scientist for NASA’s Mars Exploration Program.
“We’re finding more places where Mars reveals a warmer and wetter planet in its history. This gives us greater incentive to continue seeking evidence of past life on Mars.”
Opportunity is currently investigating a new cache of clay mineral outcrops by the summit of Solander Point, a rim segment just south of Cape York and Matejivic Hill.
These outcrops were likewise detected by the CRISM spectrometer aboard MRO. The hunt for these outcrops was detailed in earlier discussions I had with Ray Arvidson.
Opportunity by Solander Point peak – her 1st mountain climbing adventure. NASA’s Opportunity rover captured this panoramic mosaic on Dec. 10, 2013 (Sol 3512) near the summit of “Solander Point” on the western rim of Endeavour Crater where she is investigating outcrops of potential clay minerals. Assembled from Sol 3512 navcam raw images. Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer-kenkremer.com
Today marks Opportunity’s 3555th Sol or Martian Day roving Mars – for what was expected to be only a 90 Sol mission.
So far she has snapped over 188,200 amazing images on the first overland expedition across the Red Planet.
Her total odometry stands at over 24.07 miles (38.73 kilometers) since touchdown on Jan. 24, 2004 at Meridiani Planum.
Meanwhile on the opposite side of Mars, Opportunity’s younger sister rover Curiosity is trekking towards gigantic Mount Sharp. She celebrated 500 Sols on Mars on New Years Day 2014.
Opportunity by Solander Point peak – 2nd Mars Decade Starts here! NASA’s Opportunity rover captured this panoramic mosaic on Dec. 10, 2013 (Sol 3512) near the summit of “Solander Point” on the western rim of Endeavour Crater where she starts Decade 2 on the Red Planet. She is currently investigating outcrops of potential clay minerals formed in liquid water on her 1st mountain climbing adventure. Assembled from Sol 3512 navcam raw images. Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer-kenkremer.comTraverse Map for NASA’s Opportunity rover from 2004 to 2014
This map shows the entire path the rover has driven during a decade on Mars and over 3540 Sols, or Martian days, since landing inside Eagle Crater on Jan 24, 2004 to current location by f Solander Point summit at the western rim of Endeavour Crater. Rover will spnd 6th winter here atop Solander. Opportunity discovered clay minerals at Esperance – indicative of a habitable zone. Credit: NASA/JPL/Cornell/ASU/Marco Di Lorenzo/Ken Kremer
A promotional image from Sierra Nevada Corp. for the planned launch of the Dream Chaser on an Atlas V from Kennedy Space Center. Credit: SNC.
Commercial space company Sierra Nevada Corporation and NASA announced plans today to launch an orbital test flight of the Dream Chaser vehicle in 2016, and that they plan to use processing facilities at Kennedy Space Center as well as land the vehicle at NASA’s Shuttle Landing Facility in Florida.
“Today we’re very proud to announce that we have now formally negotiated our orbital spaceflight,” said Mark Sirangelo, the head of Sierra Nevada Space Systems. “We have acquired an Atlas V rocket and established a launch date of November 1, 2016, so in a little over two years from now and we’re going to be taking our vehicle to space on the board one of the best rockets that has ever been designed, the Atlas V.”
The mission will be automated and unmanned, but if all goes well Sierra Nevada hopes to have a human flight by sometime in 2017.
The Dream Chaser space plane atop a United Launch Alliance Atlas V rocket. Image Credit: SNC
The seven-passenger vehicle looks like a mini-space shuttle and is about 9 meters long (29.5 feet) with a wingspan of 7 meters (22.9 feet).
Sirangelo said they will be doing Dream Chaser pre- and post-flight processing at KSC along with Lockheed Martin at the Operations and Checkout (O&C) facility at KSC. The O&C is an historic facility which was originally built to process Gemini and Apollo era spacecraft. After significant upgrades by NASA and the State of Florida, it is currently being used by Lockheed Martin Space Systems to develop, assemble and test NASA’s Orion spacecraft.
The 2017 flights will be the first time an Atlas V will be used to send people to space since the Mercury program. The landing at the SLF will be the first landing of a space vehicle there since the final space shuttle mission, STS-135, landed there on July 21, 2011.
“That is way too long (between landings),” said Steve Lindsey, former NASA astronaut and now Sierra Nevada’s Dream Chaser program manager, “and we intend to do something about it and do it very soon… We want to continue the long tradition that was started on the Florida space coast so many years ago.”
During a question and answer period with media, questions were asked about which entity is paying for which portions of the launch and processing. But the officials were coy about not answering those questions directly.
Officials from NASA, Sierra Nevada, Lockheed Martin, United Launch Alliance and Space Florida took part in the announcement, which you can watch below.
“Today’s announcement confirms the faith the commercial industry has in Kennedy Space Center,” said Bob Cabana, the director of Kennedy Space Center.
Left landing gear failed to deploy as private Dream Chaser spaceplane approaches runway at Edwards Air Force Base, Ca. during first free flight landing test on Oct. 26, 2013 – in this screenshot. Credit: Sierra Nevada Corp.
The Dream Chaser had a test landing in October, 2013 after it was hoisted in the air by a helicopter. The automated landing went well except that one of the landing gears failed to deploy properly.
Sierra Nevada announced last week that they had completed their latest milestone for the NASA’s commercial crew program, the Commercial Crew Integrated Capability (CCiCap), Milestone 7, which is the Certification Plan Review for the entire Dream Chaser Space System. They delivered nearly 6,000 pages of technical documentation on the strategy, verification, and validation of Dream Chaser and its integration with the Atlas V launch vehicle and ground mission control systems.
A composite image (X-ray and optical wavelengths) showing galaxy cluster RX J1532.9+3021 and the black hole at its center. Credit: X-ray: NASA/CXC/Stanford/J.Hlavacek-Larrondo et al, Optical: NASA/ESA/STScI/M.Postman & CLASH team
Got gas? The black hole in galaxy cluster RX J1532.9+3021 is keeping it all for itself and stopping trillions of stars from coming to be, according to new research. You can see data above from NASA’s Chandra X-ray Observatory (purple) and the Hubble Space Telescope (yellow).
The drama is taking place about 3.9 billion light-years from Earth, showing an extreme phenomenon that has been noted in other galaxies on smaller scales, Chandra officials stated.
“The large amount of hot gas near the center of the cluster presents a puzzle,” a statement read. “Hot gas glowing with X-rays should cool, and the dense gas in the center of the cluster should cool the fastest. The pressure in this cool central gas is then expected to drop, causing gas further out to sink in towards the galaxy, forming trillions of stars along the way. However, astronomers have found no such evidence for this burst of stars forming at the center of this cluster.”
Black hole with disc and jets visualization courtesy of ESA
What’s blocking the stars (according to data from Chandra and the National Science Foundation’s Karl G. Jansky Very Large Array) could be supersonic jets blasting from the black hole and shoving the gas in the area away, forming cavities on either side of the galaxy. These cavities, by the way, are immense — at 100,000 light-years across each, this makes them about as wide as our home galaxy, the Milky Way.
The big question is where that power came from. Perhaps the black hole is “ultramassive” (10 billion times of the sun) and has ample mass to shoot out those jets without eating itself up and producing radiation. Or, the black hole could be smaller (a billion times that of the sun) but spinning quickly, which would allow it to send out those jets.
Steve Swanson, commander of Expedition 40, during a spacewalk on 2007 shuttle mission STS-117. Credit: NASA
Remember those snorkels and pads astronauts used during the ammonia pump replacement on station this past December? The new measures went a long way to helping astronauts stay safe if another helmet water leak happens, but at the same time, NASA is eager to find the cause so they know how it happened and how to prevent it.
Two maintenance spacewalks are planned for Expedition 40, but they’re not necessarily going forward yet. NASA has traced the issue to a fan pump separator, but there’s another issue, explained expedition commander Steve Swanson: where the particulates in the water came from. Perhaps they were from a filter, or perhaps from the water system itself. So NASA is reserving spacewalks on a need-only basis until more is known.
“That was the problem. Now, we’ve got to find out where that came from,” Swanson said in a phone interview with Universe Today from Houston to preview Expedition 39/40’s mission, which launches in late March. Joining the two-time shuttle astronaut will be two other people, including Alexander Skvortsov. The Russian cosmonaut commanded Expedition 24 in 2010, which experienced a similar ammonia leak to the one that was just repaired a few months ago.
Expedition 39/40 cosmonaut Alexander Skvortsov during a 2010 mission to the International Space Station, when he served as commander of Expedition 24. In the background is NASA astronaut NASA astronaut Tracy Caldwell Dyson. Credit: NASA
While leaks and spacewalks are the items that grab headlines when it comes to spaceflight, one of the major goals of the International Space Station is more subtle. Researchers hope to understand how spaceflight affects the human body during long-duration missions. (This will be a major focus of a one-year mission to station in 2015.) Through a translator, Skvortsov explained that the recent decision to extend station’s operations to at least 2024 will be a help for research of this kind.
“It is great that they have expanded the station until 2024 at least, and it will be very beneficial to the science programs and projects we have on board,” he said in Russian. “I hope that it will be extended even further. It will depend on the condition of the station.”
Expedition 39 is expected to launch March 26, 2014 from the Baikonour Cosmodrome in Kazakhstan. The crew will join orbiting spacefarers Koichi Wakata (who will command Expedition 39, a first for Japan), Rick Mastracchio (who participated in the ammonia pump swap-out) and Mikhail Tyurin.
The Expedition 39/40 crew at a NASA press conference in January 2014. From left, Oleg Artemyev, Alexander Skvortsov and Steve Swanson. Credit: NASA
