An astronomer says he's caught a star in the act of chewing up a companion and spitting out a second generation of exoplanets.
There's been liquid water on the Martian surface throughout the planet's history, measurements by NASA's Phoenix Mars Lander suggest.
Astronomers believe they've found a new type of black hole, following observations of the most extreme ultra-luminous X-ray source yet discovered.
Later today, two asteroids will swing so close to the Earth that they pass between us and the orbit of the moon.
Martian soil may contain carbon-based organic molecules, the building blocks of life.
In a project reminiscent of Prometheus' theft of fire from the gods, NASA's planning to dive into the sun and capture some of its atmosphere.
Researchers have developed a new method of predicting solar storms that they say could help to avoid power and communications blackouts.
NASA has successfully completed a two-minute, full-scale test of its DM-2 rocket motor - despite not knowing for sure whether it will ever actually be going anywhere.
What's being described as one of the most complex space scientific instruments ever built is on its way to the International Space Station to seek out the 'dark universe'.
NASA's Kepler telescope has for the first time observed a planetary system with two planets passing in front of their star.
Astronomers have discovered a planetary system containing at least five and possibly seven planets, orbiting the Sun-like star HD 10180. It makes the system the most similar to our own yet discovered.
A group of Danish amateurs will next week launch its own rocket - with plans for a manned flight to follow if all goes well.
A Japanese amateur astronomer has captured what appears to be the second meteor strike on Jupiter in three months.
Using a galaxy cluster as a magnifying lens, an international team of astronomers has used the NASA/ESA Hubble Space Telescope to examine distant regions of the universe.
The moon has grown smaller in the recent past, and may still be shrinking, new images from NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft reveal.
An MIT team has teamed up with engineers from the Charles Stark Draper Laboratory to build a new type of lunar explorer that hops along the surface.
If men ever do land on Mars, they could be too feeble to do anything much when they get there, according to new research.
Two space station astronauts are currently conducting their third and possibly final spacewalk to repair the station's faulty cooling system.
The National Research Council is calling for an infrared space telescope as the top priority for NASA astrophysicists over the next ten years.
Three 'citizen scientists' putting their home computers to work when they would otherwise have been idle have discovered a rare rotating pulsar.