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/ Technology News / 2010 / January 2010 / January 7, 2010 |
Hurtling star could fire comets at Earth!
Dark and dangerous asteroids spotted lurking unseen near Earths orbit
Chile quake shifted Earth axis to shorten length of a day, says NASA
Fujitsu Develops Technology to Enhance Comprehensive Testing of Java Programs
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Soon, spy in the sky to follow a car
An American defence research agency is developing a radar system, which will monitor vehicular movement across a city using a few uncrewed aircraft. ANI
Animal population grows in the Arctic
The overall number of animals in the Arctic has increased over the past 40 years, says a new study. ANI
An extra hour of sleep can boost pupils exam results
A comprehensive school in the UK is giving pupils an extra hour in bed in the hope that it will boost their concentration levels. ANI
NASAs Wide-field Infrared Survey Explorer, or WISE, has captured its first look at the starry sky that it will soon begin surveying in infrared light.
Washington, January 7 : NASA's Wide-field Infrared Survey Explorer, or WISE, has captured its first look at the starry sky that it will soon begin surveying in infrared light.
Launched on December 14, WISE will scan the entire sky for millions of hidden objects, including asteroids, "failed" stars and powerful galaxies.
WISE data will serve as navigation charts for other missions such as NASA's Hubble and Spitzer Space Telescopes, pointing them to the most interesting targets WISE finds.
When the WISE survey begins, the spacecraft will scan the sky continuously as it circles the globe, while an internal scan mirror counteracts its motion.
This allows WISE to take "freeze-frame" snapshots every 11 seconds, resulting in millions of images of the entire sky.
"Right now, we are busy matching the rate of the scan mirror to the rate of the spacecraft, so we will capture sharp pictures as our telescope sweeps across the sky," said William Irace, the mission's project manager at NASA's Jet Propulsion Laboratory in Pasadena, California.
To sense the infrared glow of stars and galaxies, the WISE spacecraft cannot give off any detectable infrared light of its own.
This is accomplished by chilling the telescope and detectors to ultra-cold temperatures.
The coldest of WISE's detectors will operate at less than 8 Kelvin, or minus 445 Fahrenheit.
The first sky survey will be complete in six months, followed by a second scan of one-half of the sky lasting three months.
The WISE mission ends when the frozen hydrogen that keeps the instrument cold evaporates away, an event expected to occur in October 2010.
Preliminary survey images are expected to be released six months later, in April 2011, with the final atlas and catalog coming after another 11 months in March 2012.
Selected images will be released to the public beginning in February 2010.
ANI
