WISE satellite telescope

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Strange New Kind of Galaxy Spotted

Infrared survey uncovers 'menagerie of hidden objects'

(Newser) - After two years of scanning the night sky, NASA's WISE infrared telescope has spotted millions of supermassive black holes and a type of galaxy never seen before. The hot, dust-obscured galaxies—hot DOGs—are very rare. Each emits as much light as 100 trillion suns, hidden behind a vast... More »

NASA Thinks 4,700 Asteroids Threaten Earth

And twice as many as previously believed are in orbits similar to Earth's

(Newser) - NASA thinks it's got a pretty solid estimate on the number of gigantic asteroids that could plausibly cause regional or global catastrophe by smashing into Earth: 4,700, give or take 1,500. Included in that number are all the rocks that exist, or which they suspect exist, that... More »

Asteroid Has Been Following Us for Thousands of Years

So-called trojan asteroid discovered in Earth's orbit

(Newser) - It turns out that Earth has another neighbor besides the moon: a so-called Trojan asteroid that has been traveling with us around the sun for thousands of years, reports the Los Angeles Times . Plenty of other planets have their own asteroids—there are at least 4,000 in Jupiter's... More »

NASA Launches Telescope to Detect Space Threats

WISE infrared telescope will scan whole sky for hazardous objects

(Newser) - NASA today launched the first orbiting telescope since 1983 designed to search the entire sky for objects and phenomena invisible to conventional optics. Over the next nine months, the Wide-field Infrared Survey Explorer will scan the whole sky one and a half times over looking for asteroids and comets that... More »

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