Shot from the Arctic Circle in Canada, this beautiful display of the Aurora Borealis will put you in the holiday mood (I’m sure Santa’s workshop is just beyond one of those mountains in the background!) National Geographic photographer Mike Theiss said the northern lights started around 11:30pm and continued on until around 3am. “The lights were dancing, rolling and twisting and at times looked like they were close enough to touch,” he said.
Researcher Stephen Anthony works with the new reactor prototype that could turn trash into gas. Image credit: NASA/Dmitri Gerondidakis
It probably won’t be able to fuel Doc Brown’s flux capacitor on his DeLorean time machine, but NASA researchers are hoping a new device that will be tested on the International Space Station can turn trash into power. The Trash to Gas Reactor is a miniature version of large waste incineration facilities on Earth that generate electricity or fuel. This could help with the accumulating trash on the ISS and be used on future missions beyond Earth orbit, as well as help the trash problem in areas of the world where there are neither large power plants nor garbage processing facilities.
“Not only will the effort on this help space missions but also on Earth because we have enough problems dealing with our own trash,” said Anne Caraccio, a chemical engineer working on the project.
The prototype of the Trash to Gas Reactor is a meter-long (3 foot-long) device that looks strikingly similar to the “Mr. Fusion” reactor in the second “Back to the Future” movie. Just like Doc Brown and Marty, astronauts can throw in things like food wrappers, used clothing, food scraps, tape, packaging and other garbage accumulated by the crew and the reactor will turn it into potential power, such as methane gas, or even oxygen or water.
The team developing the reactor is hoping to have their prototype ready to fly on the ISS by 2018 – which unfortunately doesn’t fit into the “Back to the Future” timeline: Emmett Brown travels to 2015 where he gets his Mr. Fusion and changes the future. But perhaps its Earth-bound counterpart could be ready in two years, in time for the Doc’s arrival from 1985.
OK, back to reality now, even though this does have a science fiction element to it…
A team led by Paul Hintze at the Kennedy Space Center has built an 80-pound small reactor to test theories about incinerating a variety of trash ranging from used clothes to uneaten food. The reactor holds more than three quarts of material and burns at about 1,000 degrees F, about twice the maximum temperature of an average household oven. It’s expected to take astronauts four hours to burn a day’s worth of trash from a crew of four.
The team estimates that during the course of a year in space – one half the length of time a mission to Mars is expected to take – trash processing for a crew of four would create about 2,200 pounds of methane fuel, enough to power a launch from the lunar surface, Hintze said.
“The longer the mission, the more applicable this technology is,” Hintze said. “If you’re just doing a two-week mission, you wouldn’t want to take along something like this because you wouldn’t get anything out of it.”
Converting garbage into fuel also would keep astronauts from turning their cramped space capsule into an orbiting landfill.
Paul Hintze is the researcher leading the trash-to-gas project at NASA’s Kennedy Space Center in Florida. Image credit: NASA/Dmitri Gerondidakis
The experimental version of the reactor is made of steel, but the team expects to employ a different alloy for future versions, something that might be lighter but just as strong in order to withstand the high temperatures needed to break down the materials and destroy potential microbes.
One of the issues the team is working on is making sure that no smell or potential hazardous gases are created as a by-product in the closed environment of the space station or a spacecraft on its way to deep space.
“On Earth, a little bit of an odor is not a problem, but in space a bad smell is a deal breaker,” Hintze said.
Right now trash in the ISS is stuffed into the Progress resupply ship, which burns up in the atmosphere during re-entry. This new reactor could turn the trash into something valuable in space.
This image from NASA’s Cassini spacecraft shows a vast river system on Saturn’s moon Titan. It is the first time images from space have revealed a river system so vast and in such high resolution anywhere other than Earth. Image Credit: NASA/JPL-Caltech/ASI
Titan is appearing more Earth-like all the time (yes, a very cold, and early version of Earth), as now the Cassini spacecraft has spotted what appears to be a miniature extraterrestrial version of the Nile River: a river valley on Saturn’s moon Titan that extends from what looks like ‘headwaters’ out to a large sea. Not only is it a riverbed, but it appears to be filled with liquid; likely very cold hydrocarbons such as ethane or methane.
Scientists deduce that the river is filled with liquid because it appears dark along its entire extent in the high-resolution radar image, indicating a smooth surface.
It is the first time images have revealed a river system this vast and in such high resolution anywhere beyond Earth.
“Though there are some short, local meanders, the relative straightness of the river valley suggests it follows the trace of at least one fault, similar to other large rivers running into the southern margin of this same Titan sea,” says Jani Radebaugh, a Cassini radar team associate at Brigham Young University, USA. “Such faults – fractures in Titan’s bedrock – may not imply plate tectonics, like on Earth, but still lead to the opening of basins and perhaps to the formation of the giant seas themselves.”
While the Earthly Nile River is 6,650 kilometers (4,132 miles) long, Titan’s big river is about 400 km long.
Titan is the only other world we know of that has stable liquid on its surface. While Earth’s hydrologic cycle relies on water, Titan’s equivalent cycle involves hydrocarbons.
Images from Cassini’s visible-light cameras in late 2010 revealed regions that darkened after recent rainfall.
Cassini’s visual and infrared mapping spectrometer confirmed liquid ethane at a lake in Titan’s southern hemisphere known as Ontario Lacus in 2008.
“This radar-imaged river by Cassini provides another fantastic snapshot of a world in motion, which was first hinted at from the images of channels and gullies seen by ESA’s Huygens probe as it descended to the moon’s surface in 2005,” said Nicolas Altobelli, ESA’s Cassini Project Scientist.
This new image of the Hubble Ultra Deep Field (HUDF) 2012 campaign reveals a previously unseen population of seven faraway galaxies, which are observed as they appeared in a period 350 million to 600 million years after the Big Bang. Credit: NASA, ESA, R. Ellis (Caltech), and the UDF 2012 Team
Astronomers using NASA’s Hubble Space Telescope have spotted some of the most distant, dim and ancient galaxies ever detected in a new survey. The images, taken with Hubble’s Wide Field Camera 3 (WFC 3) looks further back in time than any previous Hubble observation, providing information about the conditions in the early Universe.
“This is like a scientific version of the story of Genesis,” said astronomer Avi Loeb from Harvard University.
The seven distant galaxies represent a previously unseen population of galaxies that formed more than 13 billion years ago, when the Universe was less than 3 percent of its present age. In these deepest images to date from Hubble, astronomers were able to take a sample of the amount of galaxies at the time. The results show a smooth decline in the number of galaxies with increasing look-back time to about 450 million years after the Big Bang.
The data provides the first reliable census of this uncharted period of cosmic history, according to the scientists. As astronomers look even deeper into the Universe, galaxy numbers appear to drop off smoothly leading them to believe that the “cosmic dawn” was gradual, not a dramatic event.
“Observations of the microwave afterglow from the Big Bang tell us that reionization happened more than about 13 billion years ago,” said Brant Robertson of the University of Arizona in Tucson, a member of the survey team. “Our data confirms that reionization was a drawn-out process occurring over several hundred million years with galaxies slowly building up their stars and chemical elements. There wasn’t a single dramatic moment when galaxies formed; it was a gradual process.”
These galaxies were found as part of an ambitious Hubble survey of an intensively studied patch of sky known as the Ultra Deep Field (UDF), which was originally taken in 2003-2004, focusing in on a small area in the sky in the constellation Fornax. In the new 2012 campaign, called UDF 2012, a team of astronomers led by Richard Ellis of the California Institute of Technology used the WFC3 to peer deeper into space in near-infrared light than any previous Hubble observation. The observations were made over a period of six weeks during August and September 2012, and the first scientific results are now appearing in a series of scientific papers. The UDF 2012 team is publicly releasing these unique data, after preparing them for other research groups to use.
“Hubble is achieving just great science,” said John Grunsfeld, former astronaut and NASA’s associate administrator for science, speaking at a briefing about the new survey. “This is an origins story, where we’re going back to the beginning, back to the first stars that appeared in the Universe. This validates that when we get James Webb Space Telescope online it will have a lot to look at and a lot to do.”
The James Webb Space Telescope is slated to launch in 2018.
Astronomers detected seven galaxies in the time period 400-600 million years after the Big Bang. All extremely distant, they ranged in distance with redshifts from 8.6 to nearly 12.
Astronomers study the distant universe in near-infrared light because the expansion of space stretches ultraviolet and visible light from galaxies into infrared wavelengths, a phenomenon called “redshift.” The more distant a galaxy, the higher its redshift.
Notably, one of the galaxies may be a distance record breaker, observed 380 million years after the birth of our universe in the Big Bang, corresponding to a redshift of 11.9. This is the galaxy UDFj-39546284, which was previously detected and was originally suggested as the most distant object ever found nearly two years ago by Hubble. Later observations put it at a redshift of 10.3, but the newly refined observations put it even more distant.
A timeline of the Universe and our observations of it. Credit: University of Arizona.
Scientists think that the universe began with the Big Bang about 13.7 billion years ago. Hydrogen formed about 400,000 years later but with no stars, spacetime was dark. About 200 million years later, hydrogen clouds collapsed forming the first stars and galaxies; what astronomers call the “cosmic dawn.” Light from these new stars began breaking down hydrogen into protons and electrons during a time period called cosmic reionization. In the present universe, scientists see galaxies growing in mass and size with the synthesis of elements, leading to the formation of complex molecules including the components to create life. Our Sun and solar system formed just over 4 billion years ago.
“The team pushed Hubble to its limits. This is probably the farthest back Hubble can look, according to the study leader, Richard Ellis. “We are pushing Hubble well beyond what it was designed to do.”
Earth, as seen by the GOES15 satellite on December 12, 2012. Credit: NASA/NOAA GOES Project/Dennis Chesters
Although we don’t subscribe to hokum like numerology or think that dates on a man-made calendar could have any sort of cosmic significance, there is something about a little symmetry. The GOES-15 satellite captured this image of Earth today, which is 12/12/12 on the Gregorian calendar, and even added a bonus of taking the image at 1200 UTC.
Too bad the GOES-12 spacecraft had some thruster problems and is currently in a standby mode.
Dennis Chesters, project scientist of NASA’s GOES Project at the NASA Goddard Space Flight Center said this image does something significant, however: the fourth tropical cyclone in the southern Pacific Ocean. Newborn Tropical Storm Evan was born today, Dec. 12, 2012 at 1500 UTC (10 a.m. EST) and appears as a rounded area of clouds in the bottom left corner of the image. Tropical Storm Evan is about 145 nautical miles west of Pago Pago, American Samoa.
Goldstone delay-Doppler radar images of Toutatis from December 11, 2012. Credit: NASA
While Asteroid 4179 Toutatis was never a threat to hit Earth during its quite-distant pass on Dec. 11-12, astronomers were keeping their instruments and eyes on this space rock to learn more about it, as well as learning more about the early solar system. Even at closest approach, 4179 Toutatis was 7 million km away or 18 times farther than the Moon. But that is close enough for radar imaging by NASA’s Goldstone Observatory, which has recently upgraded to a new digital imaging system, as well as optical imaging by other astronomers. Already, there are some preliminary findings from this 4.5-kilometer- long (3-mile-long) asteroid’s flyby.
“Toutatis appears to have a complicated internal structure,” said radar team member Michael Busch of the National Radio Astronomy Observatory. “Our radar measurements are consistent with the asteroid’s little lobe being ~15% denser than the big lobe; and they indicate 20% to 30% over-dense cores inside the two lobes.”
NASA says this raises the interesting possibility that asteroid Toutatis is actually a mash up of smaller space rocks. “Toutatis could be re-accumulated debris from an asteroid-asteroid collision in the main belt,” Busch said. The new observations will help test this idea.
Here are more images and video from Toutastis’ pass:
Adam Block from the Mount Lemmon SkyCenter/University of Arizona captured this footage:
Astronomers are getting to know this asteroid, as it passes by Earth’s orbit every 4 years. It is one of the largest known potentially hazardous asteroids (PHAs), and its orbit is inclined less than half-a-degree from Earth’s. No other kilometer-sized PHA moves around the Sun in an orbit so nearly coplanar with our own. This makes it an important target for radar studies.
Image from the ITelescope network (Nerpio, Spain) on 2012, Dec. 11.9, through a 0.15-m f/7.3 refractor + CCD. Credit: Ernesto Guido and Nick Howes/ Remanzacco Observatory.
And this was a fairly close pass for Toutatis: The next time Toutatis will approach at least this close to Earth is in November of 2069
when the asteroid will fly by at a distance of only 0.0198 AU (7.7 lunar distances).
NASA’s Goldstone radar in the Mojave Desert has been “pinging” the space rock every day starting on December 4, and will continue until the 22nd. The echoes highlight the asteroid’s topography and improve the precision with which researchers know the asteroid’s orbit.
Additionally, the Chinese Chang’e 2 spacecraft will be observing Toutatis tomorrow, on December 13, 2012 Chang’e 2 was originally launched to study the Moon but after completing its mission, Chang’e 2 departed from the L2 point in April 2012 to align itself to make a flyby of 4179 Toutatis, expected to take place at approximately 08:27 UTC on December 13.
“We already know that Toutatis will not hit Earth for hundreds of years,” said Lance Benner of NASA’s Near Earth Object Program.. “These new observations will allow us to predict the asteroid’s trajectory even farther into the future.”
Animation from Ernesto Guido and Nick Howes of 40 consecutive 10-second exposures. Credit: Ernesto Guido and Nick Howes/ Remanzacco Observatory.
NASA says the asteroid is already remarkable for the way that it spins. Unlike planets and the vast majority of asteroids, which rotate in an orderly fashion around a single axis, Toutatis travels through space “tumbling like a badly thrown football,” as Benner describes it. One of the goals of the radar observations is to learn more about the asteroid’s peculiar spin state and how it changes in response to tidal forces from the Sun and Earth.
Here’s an animation of Asteroid Toutatis compiled the live broadcast from the Slooh space camera team:
Goldstone delay-Doppler radar images of Toutatis from December 11, 2012. Credit: NASA
Even though this is a promotional video by Google, it is a great review of 2012, good and bad. And there’s a plethora of space-related events and people featured. Look for: Felix Baumgartner’s jump, SpaceX’s Dragon launch, the search for the Higgs Boson, space shuttles, Curiosity’s landing, Neil Armstrong, Sally Ride, Ray Bradbury, the International Space Station, solar eclipse, and more.
As the Very Short List folks said, this video is “also an inspired reflection of our collective hopes, dreams, fears, and desires.”
In order to allow for a static Universe, Albert Einstein introduced the concept of the Cosmological Constant Lambda to make the math work out. Once it was discovered that the Universe was actually expanding, he threw the number out calling it his “biggest blunder.” But thanks to dark energy, the Cosmological Constant is back.
Astronaut Chris Hadfield with biomedical equipment attached to his forehead. Credit: Chris Hadfield.
Canadian astronaut Chris Hadfield is scheduled to launch on Decemer 19 with crewmates Tom Marshburn and Roman Romanenko on a Soyuz rocket, heading for a long-duration 5-month mission on board the International Space Station. We’re taking a look back at his 2-plus years of training for this mission, which Hadfield shared via Twitter and Facebook, letting the public get an inside look at what it takes to prepare for a long-duration spaceflight.
The movie “The Right Stuff” depicted the grueling array of medical tests the early astronauts had to undergo in order to determine if they had… well, the right stuff to go into space. Now, more than 50 years later, with scientists and the medical community knowing quite a bit more about how the human body reacts to micro-gravity, the pre-flight medical procedures aren’t quite as intrusive. But astronaut Chris Hadfield says it is still part of being an astronaut.
“They do a nice job of telling how hard it is going to be, how invasive,” he said in an interview with Universe Today, “but none of that matters when it’s time to go to bed at night, when you’ve got six different probes stuck in you or a loud machine next to you, and you know you you’re not going to get a good night’s sleep.”
“Whether you are flying a spaceship or a T-38, it is good to be prepared,” Hadfield said, along with posting this image via Twitter.
Another part of medical training is having a forced special diet where “you have to document everything you eat, evaluating what happens at the other end,” Hadfield explained, “and they try to be as good and non-invasive as they can, but by its very nature it is invasive, and that’s the way it is.”
Hadfield said he knew about this going into the job. “It is absolutely part of the business so it is OK,” he said.
Hadfield participating in the VC Reflex test, an experiment for orthostatic hypotension, or dizzyness from low blood pressure, one of the most common physical complications of spaceflight. “Space Science: applying electricity behind the ears affects balance and thus blood pressure regulation,” Hadfield said.
Not only are there pre-flight medical tests and procedures, but all space station crew members undergo continual medical tests and evaluations during their time in orbit, becoming test subjects for various experiments as well as keeping tabs on their health while in space.
“We do regular urine, saliva collection and blood draws. We have to be able to take blood from each other or yourself. If you’ve never taken blood from yourself…” Hadfield said, letting the sentence trail off. Fun? Not so much.
“Astronaut physical for Space Station today – 18 tubes and a squeeze ball”
Thankfully, the astronauts don’t always have to poke themselves. “We have volunteers come in all the time and let me stick them with a needle so I can get good at drawing blood,” Hadfield said, “and we do a lot of ultrasounds – carotid artery and cardiac ultrasounds. We need to identify any changes that take place in the heart after extended zero-g. This is all very important for going beyond Earth orbit; we need to understand those changes.”
A day of medical training with dummies. “Somehow the sock makes it worse,” Hadfield said via Twitter.
Not only do the crew have to do medical tests on themselves, but they have to be prepared for any medical emergency, since there usually isn’t a dedicated medical doctor on the space station. However, Hadfield considers himself lucky: crewmate Marshburn is a medical doctor.
“There are various ways to get ill on board – some natural, like appendicitis, stroke, — or you could be in an accident.” Hadfield said, “Someone could bang their head coming around a corner, get pinched between equipment, get the bends coming in from a spacewalk, or be exposed to poisonous gas. Various things can happen.”
“We have full-911 capability on board,” Hadfield continued. “We can react, we can strap someone down, get them on oxygen, inject them with things to get their heart going again, or use defibrillators. We need to know how to intubate people and give them forced breathing. We need to know how to react.”
Medical training includes practicing emergency medical procedures such as stitches.
They have small pharmacy on board, and need to know a lot of procedures. “Of course we always have medical help on-call from the ground, but you could easily have to deal with a burn or something in an eye, so I’ve trained working in an emergency room at a hospital in Houston,” Hadfield said, doing things from making a quick diagnosis to inserting catheters or IVs, or sewing stitches on wounds “ so I can get comfortable doing those things to the human body.”
Astronauts on the ISS practicing CPR: “How do you give CPR without gravity to hold you down? Like this!,” Tweeted Hadfield.
This video shows some of the emergency medical training the crew receives:
Rising slowly on over 800,000 lbs of thrust, the Atlas V-OTV 3 mission begins. Credit: John O’Connor/nasatech
An Atlas V rocket launched from Cape Canaveral Air Force Station today, carrying the Air Force’s X-37B space plane into orbit on its third classified mission. Launch took place at 1:03 EST (18:03 UTC) for the unmanned Orbital Test Vehicle (OTV), which looks like a mini space shuttle.
The U.S. Air Force has not released any details of what may be on board the vehicle or what its mission may be. United Launch Alliance provided a webcast of the launch, but the broadcast was ended “at the request of our customer (the Air Force),” when the space plane successfully reached orbit.
See a video of the launch, below.
The X-37B is launched like a satellite and rides inside the fairing of the Atlas rocket. The X-37B can operate at in low Earth orbit for extended periods of time – the previous mission stayed in orbit for 469 days – and can re-enter Earth’s atmosphere and land on autopilot, landing just like a plane on a runway at Vandenberg Air Force Base in California.
Well into its roll program, the Atlas V-501 gracefully arcs across the blue skies. Credit: John O’Connor/nasatech
While looking much like the space shuttle, the X-37B is about 1/4 the size of NASA’s space shuttle’s and is built using composites lighter than aluminum, and it uses a new type of leading wing tiles, called Tough Rock, instead of the shuttle’s carbon-carbon tiles. It runs on solar power allowing for longer missions.
The plane itself is not so secretive – the Air Force has released images of it while it is on the ground – but its mission and payload are what are kept confidential. The mission could be Earth observation, surveillance or spying, or perhaps deploying a satellite.
A United Launch Alliance Atlas V is rolled to the pad at Space Launch Complex-41 in preparation for launch of the Air Force?s third Orbital Test Vehicle (OTV-3) mission. Credit: ULA
The launch was delayed several times so that ULA could investigate a glitch during a launch back in October.
“We had a little bit of concern with our upper stage engine, so we wanted to do some investigation and look into what was going on with that engine prior to (launch of the Orbital Test Vehicle),” said Jessica Rye, a ULA spokesperson.
In past missions, satellite watchers and amateur astronomers have kept tabs on the X-37B’s orbital whereabouts, and thanks to them, we expect to be able to provide small details about the space plane’s mission in the coming months.
