YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...

YR4, a near-Earth asteroid has a one-in-45 chance of hitting Planet Earth in December 2032, NASA and the European Space Agency believe ...

Scientists stress more testing is needed to better understand the Bennu samples, as well as more asteroid and comet sample returns. China plans to launch an asteroid sample return mission this year.

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment ... the Red Planet at its brightest, as well as a comet’s closest approach to the sun.

Okay, I am being overly dramatic by the title, the asteroid YR4 was initially projected to have a 3.1% chance of hitting the ...

A roughly 50-meter-wide asteroid or comet exploded over the Siberian forest in Russia ... By comparison, a much larger asteroid like Bennu (500 meters wide) could trigger an "impact winter" by ...