Spitzer | Universe Today

NASA's Spitzer Space Telescope captured this infrared image of a giant halo of very fine dust around the young star HR 8799. Image credit: NASA/JPL-Caltech/Univ. of Ariz.

Just what is going on over at the star HR 8799? The place is a mess! But we can just blame it on the kids. Young, hyperactive planets circling the star are thought to be disturbing smaller comet-like bodies, causing them to collide and kick up a huge halo of dust. HR 8799 was in the news in November 2008, for being one of the first with imaged planets. Now, NASA's Spitzer Space Telescope has taken a closer look at this planetary system and found it to be a very active, chaotic and dusty system. Ah, youth: our solar system was likely in a similar mess before our planets found their way to the stable orbits they circle in today.
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Something strange is going on around a young star called LRLL 31. Astronomers have witnessed a swirling disk of gas and dust which is changing rather quickly; sometimes weekly. This is likely a planet forming disk, however, planets take millions of years to form, so it's rare to see anything change on time scales we humans can perceive. Another object appears to be pushing a clump of planet-forming material around the star, and this region is offering astronomers with the Spitzer Space Telescope a rare look into the early stages of planet formation.
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Combining data from the Chandra X-Ray Observatory and the Spitizer Space Telescope allowed astronomers to create this gorgeous new image of Cepheus B. Besides being incredible eye candy, the new image also provides fresh insight into how some stars are born. The research shows that radiation from massive stars may trigger the formation of many more stars than previously thought.
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One of the main theories of how our Moon formed involves a violent cosmic collision between two planets. Astronomers have only been able to hypothesize what this collision was like, but now they have a better idea of what would ensue after such an event. With its infrared eyes the Spitzer Space Telescope has found the aftermath a collision between two planets, and what it shows is brutal. "This collision had to be huge and incredibly high-speed for rock to have been vaporized and melted," said Carey M. Lisse of the Johns Hopkins University Applied Physics Laboratory, "This is a really rare and short-lived event, critical in the formation of Earth-like planets and moons. We're lucky to have witnessed one not long after it happened."

Watch the animation/recreation of the event in the video above.
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The Spitzer Space Telescope has run out of the liquid helium that kept its optics cool — but the scope has already returned compelling new images as if to say:

I don't need no stinkin' helium.

At five and a half years, Spitzer's prime mission more than doubled initial expectations. It finally ran out of liquid helium in May and was retooled for a new "warm mission" that began July 27. With its two remaining infrared channels, the telescope promises to observe with roughly the same sensitivity as a 30-meter ground-based telescope.

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Imagine peering through your telescope and having a wild creature with one Cyclops-like eye looking back at you! NASA's Spitzer Space Telescope saw just that when it located galaxy NGC 1097, about 50 million light-years away. It has long, spindly arms of stars, and its one "eye" at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars. Plus, this creature looks to be carrying a smaller blue galaxy in its arms!
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The Spitzer Space Telescope is close to running out of coolant. Around May 12, the telescope will use up the last drop of the coolant that chills the instruments to just a few degrees above absolute zero. Everyone knew this was coming, but still it is sobering news. However, even though the coolant will be depleted, Spitzer will remain cold enough to still probe the universe with its infrared detectors for at least a couple of years. But we all like to think these missions will go on forever, at least I do anyway. The Jet Propulsion Laboratory shared this news in one of the more creative press releases ever put out by any NASA center: they interviewed the telescope. That's right, the telescope. Not the principal investigator, not the chief engineer, but the telescope itself.
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Look at the disk of any large spiral galaxy, and outwardly it appears smooth, with stars evenly distributed throughout. But when young stars are forming, they are clustered together in dense clouds of dust and gas. So what happens as the galaxy matures to allow for the smooth distribution seen in galaxies like the Milky Way? Using NASA's Spitzer Space Telescope, an international team of astronomers has discovered streams of young stars flowing from their natal cocoons in distant galaxies. These distant rivers of stars provide an answer to one of astronomy's most fundamental puzzles.
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Were there once habitable planets long ago around stars that are now dead? A team of astronomers have found evidence that between 1-3 percent of white dwarf stars are orbited by rocky planets and asteroids, suggesting these objects once hosted solar systems similar to our own. White dwarf stars are the compact, hot remnants left behind when stars like our Sun reach the end of their lives. Using data from the Spitzer Space Telescope, an international team of astronomers have determined that asteroids are found in orbit around a large number of white dwarfs, perhaps as many as 5 million in our own Milky Way Galaxy.
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"Life as we know it" seems to be the common caveat in our search for other living things in the Universe. But there's also the possibility of life "as we don't know it." A new study from NASA's Spitzer Space Telescope hints that planets around stars cooler than our sun might possess a different mix of potentially life-forming, or "prebiotic," chemicals. While life on Earth is thought to have arisen from a hot soup of different chemicals, would the same life-generating mix come together around other stars with different temperatures? (And should we call it 'The Gazpacho Effect?') "Prebiotic chemistry may unfold differently on planets around cool stars," said Ilaria Pascucci, lead author of the new study.
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Image credit: NASA/JPL-Caltech/University of Arizona

NASA's Spitzer Space Telescope has captured this new image of M33, also known as the Triangulum Galaxy, and released it as part of the "Around the World in 80 Telescopes" event for the International Year of Astronomy.

Besides the pretty colors, the new image reveals something else about M33: it's more than meets the eye.

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An imminent collision of biblical proportions has been captured by the Hubble and Spitzer Space Telescopes. The image here offers a rare view of a collision about to happen between the cores of two merging galaxies, each powered by a black hole with millions of times the mass of the sun. Already this union is considered to be one galaxy: NGC 6240, located 400-million light years away in the constellation Ophiuchus. Millions of years ago, each core was the dense center of its own galaxy before the two galaxies collided and ripped each other apart. Now, these cores are approaching each other at tremendous speeds and preparing for the final cataclysmic collision. They will crash into each other in a just a few million years.
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Carbon and oxygen have been spotted in the dust around stars in the center of the Milky Way galaxy, suggesting that the stars have undergone recent disruptions of some kind — and hinting how stars can send heavy elements — like oxygen, carbon, and iron — out across the universe, paving the way for life.

Scientists have long expected to find carbon-rich stars in our galaxy because we know that significant quantities of carbon must be created in many such stars. But carbon had not previously shown up in the clouds of gas around these stars, said Matthew Bobrowsky, an astrophysicist at the University of Maryland and a co-author of a new study reporting the discovery.

“Based on our findings, this is because medium-sized stars rich in carbon sometimes keep that carbon hidden until very near the end of their stellar lives, releasing it only with their final ‘exhalations’,” explained Bobrowsky.

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Two of the biggest space telescopes have combined forces to create a HUGE panorama of the center of the Milky Way galaxy. This sweeping, composite color panorama is the sharpest infrared picture ever made of the Galactic core. Revealed in the image are a new population of massive stars and new details of complex structures in the hot gas and dust swirling around, created by solar winds and supernova explosions. The image shows an area about 300 light-years across. Click here for options in seeing this image in small, medium or super-sized extra large resolution! Click here for a stunning movie showing the location and more detail of this image in visible light. Astronomers at the American Astronomical Society meeting pointed out the actual galactic center is in the large white region near the lower right side of the image. If you need something to keep you occupied for awhile, try counting the number of stars in this image!

More about this image…
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The turbulent and dynamic Swan Nebula (M17) has been imaged by NASA's Spitzer Space Telescope, producing the clearest view yet of the star-forming region. Within the twisted cloud of gas and dust, violent stellar winds constantly blast the medium, generating flows around stars, creating vast bow shocks. A few massive stars in the centre of M17 are the main source of the relentless stellar "rivers" of gas, immersing smaller stars in the the flow, acting like stationary rocks on a riverbed…
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