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Latest Great Observatories Origins Deep Survey Stories

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2007-09-06 11:59:59

NASA's Hubble and Spitzer Space Telescopes have joined forces to discover nine of the smallest, faintest, most compact galaxies ever observed in the distant universe. Blazing with the brilliance of millions of stars, each of the newly discovered galaxies is a hundred to a thousand times smaller than our Milky Way Galaxy. "These are among the lowest mass galaxies ever directly observed in the early universe" says Nor Pirzkal of the Space Telescope Science Institute in Baltimore, Md. The...

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2007-05-29 09:25:00

In just a short amount of time, NASA's Spitzer Space Telescope has bagged thousands of previously unknown dwarf galaxies in a giant cluster of galaxies. Despite their diminutive sizes, dwarf galaxies play a crucial role in cosmic evolution. Astronomers think they were the first galaxies to form, and they provided the building blocks for larger galaxies. They are by far the most numerous galaxies in our Universe, and are an important tracer of the large-scale structure of the cosmos. Computer...

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2006-09-13 16:40:00

A systematic search for the first bright galaxies to form in the early universe has revealed a dramatic jump in the number of such galaxies around 13 billion years ago. These observations of the earliest stages in the evolution of galaxies provide new evidence for the hierarchical theory of galaxy formation -- the idea that large galaxies built up over time as smaller galaxies collided and merged. Astronomers at the University of California, Santa Cruz, used NASA's Hubble Space Telescope to...

2006-07-03 10:25:19

The Advanced Camera for Surveys aboard the NASA/ESA's Hubble Space Telescope was successfully reactivated on Friday 30 June 2006. Engineers had received indications on Monday 19 June that power supply voltages were out of acceptable limits, causing the camera to be switched into a safe holding state. Engineers studied the problem and determined that an electrical power supply had failed. While the Advanced Camera for Surveys was out of operation, Hubble observations continued using other...

2005-12-05 11:00:00

ESA -- ESA's Science Programme Committee has extended operations of the highly successful astronomical observatories Integral and XMM-Newton for four years, until 16 December 2010 and 31 March 2010 respectively. As usual, there will be a review of the scientific performance and of the missions status in another two years' time, around autumn 2007. The Integral gamma-ray observatory was launched on 17 October 2002, and has been providing ever since an increasingly detailed insight into some...

2005-09-27 12:51:54

By Deborah Zabarenko WASHINGTON (Reuters) - Astronomers using two of NASA's most powerful telescopes said on Tuesday they have detected a "big baby" galaxy, vastly heavy for its young age and its location in the early universe. The discovery was surprising, since astronomers have long theorized that galaxies form when stars gradually cluster together, with small galaxies preceding bigger galaxies. But the stars in this cosmic infant -- less than 1 billion years old -- have eight...

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2005-09-27 14:20:00

NASA -- Two of NASA's Great Observatories, the Spitzer and Hubble Space Telescopes, have teamed up to "weigh" the stars in several very distant galaxies. One of these galaxies, among the most distant ever seen, appears to be unusually massive and mature for its place in the young universe. This comes as a surprise to astronomers because the earliest galaxies in the universe are commonly thought to have been much smaller agglomerations of stars that gradually merged together to build large...

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2005-06-24 06:20:00

ESA -- ESA's orbiting X-ray observatory XMM-Newton joins the fleet of spacecraft taking part in one of the world's largest astronomical observation campaigns - the Deep Impact event "“ on 4 July 2005. On 4 July, NASA's Deep Impact mission will send a 370 kg copper projectile ('impactor') to impact on Comet 9P/Tempel 1, to dig into the secrets of its nucleus. Comets are very interesting celestial objects. In fact, their composition carries important information about the origin of...

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2005-05-05 07:25:00

JPL -- NASA salutes Space Day, observed this year on May 5, with a new dramatic image of the Sombrero galaxy. Space Day, held the first Thursday each May, is designed to inspire the next generation of explorers. The galaxy, called Messier 104, is commonly known as the Sombrero galaxy because in visible light it resembles a broad-brimmed Mexican hat called a sombrero. The new Sombrero picture combines a recent infrared observation from NASA's Spitzer Space Telescope with a well-known visible...

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2005-04-06 07:50:00

RAS -- UK and US astronomers have used the Spitzer Space Telescope and the Hubble Space Telescope to detect  light coming from some of the first stars to form in some of the most distant galaxies yet seen. Speaking today at the RAS National Astronomy Meeting in Birmingham, Dr. Andrew Bunker (University of Exeter) discussed new evidence that the formation of the first galaxies may have got underway earlier than previously thought. This observational work using infrared images from...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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