Was it a catastrophic collision in the star's asteroid belt? A giant impact that disrupted a nearby planet? A dusty cloud of rock and debris? A family of comets breaking apart? Or was it alien megastructures built to harvest ...
Astronomers have used many different methods to discover planets beyond the solar system, but the most successful by far is transit photometry, which measures changes in a star's brightness caused by a mini-eclipse. When ...
The grizzled asteroid miner is a stock character in science fiction. Now, a couple of recent events - one legal and the other technological - have brought asteroid mining a step closer to reality.
The main-belt asteroid (493) Griseldis was probably hit by another object last March. The results were reported on November 12 at the annual meeting of the Division for Planetary Sciences of the American Astronomical Society ...
Since it began operations in December 2009, NASA's NEOWISE mission has observed 158,000 asteroids and discovered more than 35,000.
The highest-resolution radar images of asteroid 2015 TB145's safe flyby of Earth have been processed and yield new information about its surface features.
An asteroid four times the size of a football pitch will miss Earth on All Hallows' Eve. The flyby highlights the need to watch for space rocks.
The five CubeSat concepts to be studied to accompany ESA's proposed Asteroid Impact Mission into deep space have been selected.
This false-colour image featuring the Manicouagan Crater was captured by the Sentinel-1A satellite on 21 March.