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Astronomers find 2nd galaxy lacking dark matter
Dark matter theory - the idea that a huge fraction of our universe exists in a form we can't see - is a cornerstone of modern cosmology. Ironically, galaxies lacking dark matter might help confirm the theory.
April 2, 2019
Speedy asteroid buzzed Earth last week, 1 day before being detected
A small asteroid - now designated as 2019 FC1 - flew closer to us than the moon on March 28, 2019. Astronomers detected it 1 day later. It's the largest of 14 asteroids to pass closer to us than the moon since 2019 began.
April 1, 2019
Saturn’s rings coat 5 tiny moons
New findings from Cassini - which orbited Saturn from 2004 to 2017 - confirm that dust and ice from Saturn's rings accumulate on moons orbiting in the rings' vicinity.
April 1, 2019
NASA and Google partner on Mars exploration
Devon Island in the Arctic is one of Earth's most Mars-like places. NASA is there, training scientists and testing technologies for future Mars exploration. Now Google has joined in, to bring Devon Island's Mars-like wonders to you.
March 31, 2019
Grab a bit of asteroid Bennu? Turns out, it’s tougher than expected
The OSIRIS-REx mission, which plans to get an sample of the asteroid and return it to Earth, is facing some unexpected challenges.
March 31, 2019
Hubble captures a rare active asteroid
The Space Telescope's sharp imaging provided detail on activity from active asteroid Gault, which is now known to be spinning on its axis so fast that material on its surface at times flies off into space.
March 30, 2019
Here’s a solar system being born
Astronomers have spied 2 rings of dust around a young star, DM Tau. The image shows what our own solar system might have looked like as its planets were forming, 4.6 billion years ago.
March 28, 2019
NASA proposes mission to Neptune moon Triton
Triton is Neptune's largest moon. It's a bizarre and geologically active world - a possible ocean moon - visited by Voyager 2 in 1989. Now, NASA has proposed a new mission called Trident to sweep past Triton again in 2038.
March 28, 2019
What happened before the Big Bang?
How can we get an inkling of what existed before our universe began? Scientists at the Harvard-Smithsonian Center for Astrophysics suggest a way.
March 27, 2019
Jupiter’s 700,000-year journey toward the sun
Scientists in Sweden say that Jupiter - largest planet in our solar system - formed 4 times farther away from the sun than its current orbit. They believe it moved inward toward the sun in a journey lasting 700,000 years.
March 27, 2019
