Supernovae, or exploding stars, are relatively common. But now astronomers have observed a baffling new type of cosmic explosion, believed to be some 10 to 100 times brighter than an ordinary supernova.
65 million years ago, a monster asteroid wiped out 2/3 of all life on Earth, including the dinosaurs. But an astrophysicist explains why it’s the smaller near-Earth objects (NEOs) that pose a greater imminent threat.
Japan's Hayabusa 2 is now just 12 miles (20 km) from Ryugu's surface. The spacecraft will now begin studying the asteroid to find the best locations for its lander and 3 small rovers.
`Oumuamua is moving faster than expected on its way out of our solar system. Astronomers now think it's really a comet, venting material from its surface that's giving the object a small but steady push.
The meteor was seen over Russia on June 21. Now scientists from Ural Federal University are reporting finding meteorite fragments from the event. Plus ... why are so many large meteors seen over Russia?
Rosetta journeyed through space for 12 years and performed early flybys of Earth, Mars and 2 asteroids before arriving at comet 67P/Churyumov-Gerasimenko. It produced nearly 100,000 images. Some of the best, here.
The storm is now officially "planet-encircling." At Gale Crater, where the Curiosity rover is studying the storm's effects, dust has starkly increased. Meanwhile, the Opportunity rover stays silent.
Astronomers now have the 1st direct image of a black hole ripping apart a star. The star-stuff goes into a disk surrounding the hole, and it's also ejected back to space in powerful jets.