In a new twist on the giant impact theory, a new idea posits that the Moon might have formed from the vaporized remains of Earth after an epic collision with another planet-sized body.
With winter's chill fading away, this is a great time to gaze up into the stars — and to be ready for an evening appearance by fleet-footed Mercury. This month's astronomy podcast guides you around the nighttime sky.
A simple experiment has detected a signal from the first stars forming just 180 million years after the Big Bang. The observations have intriguing implications for the nature of dark matter.
As part of a major survey of evolved stars, scientists have discovered the most eccentric planet known to orbit a giant. What can we learn from this unusual object before it’s eventually consumed by its host?
It turns out that neutron stars — not black holes — power at least some ultraluminous X-ray sources.
Astronomers have detected a torus rotating around the supermassive black hole at the center of spiral galaxy Messier 77, collecting observations that may shed light on why these weird structures exist.
Supermassive black holes en route to merger have strange dynamics in their gas disks. Astronomers have spotted the most distant spectroscopically confirmed supernova. And NSF decides the fate of the Arecibo Observatory.
In 2016 an amateur astronomer was testing his camera — and captured the first flash of a supernova.
The recent budget proposal for NASA dealt a blow to the astronomical community, putting several key missions — including WFIRST, a successor to Hubble — under the financial axe.
Scientists have finally confirmed a decades-old theory on what causes the faint flickering seen in the Northern Lights toward dawn.
AAS Chambliss Award winner Donald Bruns explains how he confirmed Einstein's predictions during the 2017 total solar eclipse.
The recent discovery of a new type of tiny, star-forming galaxy is the latest in a zoo of detections shedding light on our early universe. What can we learn from the unique “little blue dots” found in archival Hubble data?
Newly-discovered asteroid 2018 CB will be passing only about 44,000 miles away Friday and visible in modest telescopes.
SpaceX made history on February 6th when the company successfully launched its long-awaited Falcon Heavy rocket from Kennedy Space Center in Florida.
A new suite of cosmological simulations sheds light on the interconnected cosmic processes that shape the universe.
Two new studies of the seven planets orbiting TRAPPIST-1 shed light on how these worlds formed and what they look like now.
Dark matter particles may travel more slowly than we thought, hindering their detection. Dust storms may aid atmospheric loss on Mars. And a new mission is investigating magnetic fields at an unprecedented scale.
New research shows that the supersonic motion of the Moon's shadow across the continental U.S. in August 2017 created bow waves in Earth's atmosphere.
The 2018 total lunar eclipse was witnessed by many in western North America and right across the Pacific.
Most of the dwarf galaxies around Centaurus A appear to be orbiting the giant galaxy along a single plane — a result not predicted by current cosmological models.
Almost everyone considered Japan's Venus-bound orbiter a lost cause, but the spacecraft survived, reached its objective, and is wowing scientists with results.
February's astronomy podcast offers you a trio of bright planets to spot before dawn and a plethora of bright stars to check out each evening.
The launch of the Humanity Star has some fuming, others smiling, at the prospect of seeing a bright, new satellite. What do you think?
60 year ago today, a small satellite ushered in the U.S. space program in a big way.
If you're not in the right place in the right time, you can still view Wednesday morning's total lunar eclipse online via several live streams. We list several options here.