A giant space rock wiped out the dinosaurs 65 million years ago. Could Earth be hit again?
Although it’s just 270 miles across — about as big as Alabama — the asteroid Hygeia has surprised astronomers by being round.
A Japanese spacecraft left a distant asteroid on Wednesday, starting its yearlong journey home after successfully completing its mission to gather soil samples and data that could provide clues to the origins of the solar system, the country’s space agency said.
Tiny fragments of an asteroid located more than 200 million miles from Earth could hold the key to discovering the origins of the world’s oceans, according to researchers at a Scottish university.
NASA’s impact monitoring system has detected the largest and most dangerous asteroid that could hit Earth. If this asteroid collides with Earth, it could cause a partial extinction event on the planet.
One of the planet’s most dramatic extinctions was caused in part by ocean acidification, which has become a problem in our own era.
Isotope found in seabed sediment points to clash of solar bodies near Mars, study suggests
Japan’s Hayabusa 2 probe has made its presence known on Ryugu since entering orbit around the asteroid in June 2018, deploying a pair of bouncing robots and touching down on its surface not once, but two times.
When it comes to mining space for water, the best target may not be the moon: Entrepreneurs’ richest options are likely to be asteroids that are larger and closer to Earth.
466 million years ago, the break-up of a large space rock may have led to major changes in our planet’s biodiversity