The Hubble Space Telescope spotted a growing, gaseous supernova remnant, known as 1E 0102.2-7219, from a supernova explosion that occurred 1,700 years ago during the fall of the Roman Empire.
Asteroids are space rocks thought to be the remains left over from the formation of the solar system. They range in size from tiny (the size of a car or so) to truly giant, with at least one - Ceres - gaining dwarf planet status. In our solar system, billions of asteroids are in the asteroid belt, a region around the sun between the orbits of Mars and Jupiter. Others stray from this region, and can potentially post an impact threat to the Earth. At least one interstellar asteroid, called 'Oumuamua, has passed through our solar system. Learn more about asteroids here.
What if the world were constantly bombarded with space-rock smashups, big enough and frequent enough to shape the course of entire cultures?
Just a month after returning asteroid samples to Earth, Japan's Hayabusa2 probe is officially on the move toward another space rock.
Space.com caught up with NASA Planetary Defense Officer Lindley Johnson to discuss recent events and what's on the planetary-defense agenda in the coming year.
There's a giant asteroid somewhere out there in the solar system, and it hurled a big rock at Earth that left behind meteorites unlike any scientists had ever seen.
This year saw a new age of sample-retrieval missions, protests against a telescope, an incredible visit from a dazzling comet and the ''great conjunction'' of Saturn and Jupiter.
Japanese scientists have gotten their first look inside the capsule container of the Hayabusa2 spacecraft, and even the first glance is promising.
Japanese scientists are thrilled to finally have asteroid samples arrive Monday (Dec. 7) after a long flight from Australia — and a much longer journey through the solar system.
A small capsule bearing pristine pieces of the near-Earth asteroid Ryugu touched down today (Dec. 5) in the Outback of South Australia.
Modern astronomy is going through a new chapter of sample-retrieval missions, which started with the Apollo program.
Japan's Hayabusa2 spacecraft is about to deliver a precious sample of asteroid dust to Earth late Friday, Dec. 4 (EST), and you can watch the event live.
A misunderstood piece of space junk whizzed by Earth Tuesday (Dec. 1), but don't worry, it's just part of an old moon mission's rocket.
Arecibo Observatory's massive radio telescope has collapsed; with it has gone a crucial tool in understanding asteroid risks to Earth — and it would take a serious government initiative to replace.
Ignorance may feel like bliss, but preparedness offers better odds of surviving what is to come. And when it comes to planetary defense, ignorance just became a bit more inevitable.
Information about the asteroid Ryugu, which was explored by the Hayabusa2 spacecraft from 2018 to 2019.
Astronomers say they'll have to keep an eye on the near-Earth asteroid Apophis to see how much of a danger the space rock poses to our planet during a close pass in 2068.
NASA's asteroid-sampling maneuver last week was so successful that the spacecraft will begin stowing its new souvenirs today (Oct. 27) to avoid losing rock by idling around.
OSIRIS-REx snagged so much dirt and rock from the asteroid Bennu on Tuesday that the probe's sampling mechanism didn't close properly, allowing some of the collected material to escape into space.
A NASA spacecraft has really made a mess of things on the asteroid Bennu, and scientists are thrilled. OSIRIS-REx performed well in its sampling attempt.