Comets/Asteroids
A month's worth of cool science stories summed up.
Researchers in Antarctica turned up a large amount of a form of iron likely forged in nearby supernova explosions.
Test of mining prowess of microbes lifted off yesterday.
The tiny world of Ultima Thule, which lies at the outer edges of the solar system, is flattened like a pancake, with few craters.
Astronomers are trying to deflect a near-Earth asteroid for the first time, to prepare for a future object on a collision course with the planet.
Their observations confirm water lurks in the moon's subsoil, not just at the poles.
Radar has revealed evidence of an environmentally significant impact that probably occurred during the last 2.6 million years.
Scientists are training computers to help us stop asteroids from crashing into our planet.
Explore the stars that surround us in this month's slideshow.
The Outer Space Treaty, which turns fifty this year, laid the basic ground rules for the exploration of the final frontier.