Scientists with the Messenger mission to Mercury unveiled their findings Thursday, which are answering some decades-old mysteries – but also creating new ones.
Tatooine is the mythical home of Luke Skywalker. Now, scientists have identified a planet in a binary system 200 light-years away, although the planet is more like Saturn in mass and makeup.
Vesta, the second-largest object in the asteroid belt, may have a thin skin of water molecules like parts of the moon. Dawn, an orbiting spacecraft, arrives today to begin orbiting and observing.
The Space Shuttle Endeavour will be visible in the night sky early Tuesday morning. When can you see Endeavor, on it's last mission, and where should you look?
Beginning of the end of the world: May 21st is what a California minister (with a considerable following) predicts. Scientists, for their part, consider the sun's 'habitable zone' in calculating when Earth will become toast.
Halley's Comet won't be back for half a century, but tonight Earth will move through some of the debris the comet left behind, creating a spectacular meteor shower – if you live far enough south.
Cracker-size satellites are to launch with the Space Shuttle Endeavour, advancing efforts to populate the Earth's orbit with tiny 'space-chips.'
Mercury had been excluded from the travels of instrument-loaded orbiters because of the difficulty of the mission – until now. On Thursday, the NASA MESSENGER started orbiting the planet.
After a journey of 6 1/2 years, nearly 15 laps around the sun, NASA's Messenger spacecraft will perform its orbital insertion maneuver on Thursday, becoming the first spacecraft to enter Mercury's orbit.
The Kepler space telescope is designed to look for planets like Earth that could have life. But no one expected it to find 54 planet-candidates at Goldilocks distances from their stars – not too warm or cold for life as we know it – in its first four months of operation.