An Ariane 5 rocket rises between the silhouettes of two palm trees as it lifts off into the cloud-covered evening sky in Kourou, French Guiana.
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.
Excluding Mercury, this newly discovered asteroid has the smallest known aphelion distance in our entire solar system.
A black hole was photographed, the farthest flyby was completed, and a beloved rover was proclaimed dead. Follow us through the highs and lows of 2019 space science.
As the 2010s come to a close, it's time to revisit how some of the biggest space science stories shaped the decade.
For the first time, astronomers have gotten an up-close view of eruptions from an asteroid, shedding light on what might drive such explosions.
The European Space Agency has officially approved the Hera mission, which will assess the results of NASA's asteroid-walloping Double Asteroid Redirection Test.
A recent test of the ion engine that powers Japan's Hayabusa2 spacecraft went well, clearing the hardware for full-on operations soon, mission team members announced late last week.
Japan's enterprising asteroid-sampling spacecraft began they journey home Tuesday (Nov. 12), packed full of precious space rocks that scientists can't wait to get their hands on.
NASA's OSIRIS-REx spacecraft will "tag" asteroid Bennu at one of four potential sites next year. See close-up views of the four candidate sites here!
Hayabusa2's team — despite encountering a rockier surface than expected — made flawless touchdowns twice on an asteroid. Yet there are no plans for a "Hayabusa3," at least right now.
The pace of finding threatening near-Earth objects is slowing, so the community is looking forward to a new space telescope to help in its quest to locate 90% of all city-threatening worlds.
The asteroid Hygiea may qualify as a dwarf planet — and it could steal the title of the smallest dwarf planet in the solar system!
An enormous asteroid flew by Earth today (Oct. 25), and you can watch it zip by in a video from the Virtual Telescope Project.
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