NASA's EPOXI spacecraft on Thursday began an unprecedented weeks-long rendezvous with Hartley 2 – a wasp-waisted comet of dry ice that spews cyanide into space.
NASA's EPOXI craft radios 'I'm still alive' to mission control and sends back the first five close-up images of tiny, pockmarked Comet Hartley 2. Scientists eagerly await the photos in high-def.
Comet Hartley 2 will get its portrait taken on Thursday by NASA's EPOXI spacecraft. NASA will snap 6,000 high-resolution images of 103P/Hartley 2, a small comet that hangs out around Jupiter's orbit.
Water ice discovered on the surface of an asteroid orbiting the sun between Jupiter and Mars lends credibility to the theory that asteroids, not comets, brought water to Earth.
The object that hit Jupiter last weekend released thousands of times more energy than the massive Tunguska blast in Siberia in 1908, say astronomers.