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See Mars moon Phobos drift in front of Saturn
Expand to full size to see this video from ESA’s Mars Express spacecraft, which caught a close-up view of the little Mars moon Phobos, moving in front of distant Saturn.
March 1, 2018
Astronomers detect earliest hydrogen
They used a radio telescope to peer back to a time only 180 million years after Big Bang - when the 1st stars were turning on - to observe the earliest-yet signals of hydrogen gas.
February 28, 2018
Moon’s water might be widespread
A new study suggests that the moon’s water is widely distributed across its surface, though it’s not necessarily easily accessible.
February 28, 2018
Some black holes erase your past
You can't survive a passage into a black hole ... or can you? A UC Berkeley mathematician says you could enter certain types of black holes, but your past would be obliterated and you'd have an infinite number of possible futures.
February 25, 2018
Supermassive black hole and host galaxy not evolving together?
Astronomers assumed supermassive black holes and their host galaxies evolve together and affect each other. They call it "co-evolution." But it's not happening in the distant galaxy WISE1029.
February 25, 2018
This asteroid sweeps closer than our moon today
The average distance of the moon is 239,000 miles (385,000 km). Asteroid 2018 DU will sweep significantly closer than that on February 25, 2018.
February 25, 2018
Mars rover finds possible rock stripes
The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from repeated freezing and thawing of wet soil.
February 22, 2018
Amateur astronomer captures a supernova’s 1st light
Supernovae - exploding stars - are unpredictable. But an amateur astronomer in Argentina happened to catch one just as it began to explode. "It's like winning the cosmic lottery," one astronomer said.
February 21, 2018
Juno’s look at Jupiter’s swirling clouds
See swirling cloud formations in the northern area of Jupiter's north temperate belt in this new view taken by NASA’s Juno spacecraft.
February 21, 2018
Copernicus’ revolution and Galileo’s vision, in pictures
It’s not a stretch to say these astronomers fundamentally changed the way we think about our place in the universe. We can gain insights into how this profound shift unfolded by looking at their actual notes.
February 19, 2018
