Back in July, NASA's ATLAS telescope in Chile spotted a mysterious space object moving at break-neck speeds towards our ...

As an interstellar visitor nears the Sun, scientists brace for a crucial moment that could reveal whether it’s a simple comet ...

LOS ANGELES - Since 1989, the camera on NASA's Galileo spacecraft has captured a comet slamming into Jupiter, volcanoes erupting on one of its moons and the first known moon orbiting an asteroid. On ...

Half a billion miles away, a lone emissary from Earth will carry out its own death sentence today when it screams into the atmosphere of the planet Jupiter at 108,000 mph and gets vaporized. The ...

A new analysis of data from NASA’s Galileo spacecraft reveals a subsurface “ocean” of magma–either molten or partially molten–beneath the surface of Jupiter’s volcanic moon Io. The finding, from a ...

In the end, it was the hint of life on an icy moon that doomed the Galileo spacecraft to a fiery death. This afternoon, the NASA spacecraft will end its 2.8-billion-mile odyssey with a suicidal plunge ...