A new model suggests that the star Betelgeuse committed an act of cannibalism.
Australia's deadly wildfires have killed at least 28 people since they began in September 2019 and continued into January 2020. Here's the view from space by NASA satellites.
Astronomers have found two more potentially life-supporting alien planets in our neck of the cosmic woods, as well as a weird and record-setting 'cold Neptune.'
As the deadly Australian wildfires spread smoke around the world, astronauts in space are closely watching the burns advance.
Taal volcano in the Philippines rumbled to life on Jan. 12, sending steam and sulfur skyward. Satellites have captured images of the eruption.
The US Navy confirmed they have secret, classified documents regarding a 2004 UFO encounter, but releasing them could 'gravely damage' national security.
String theory is a powerful idea, unfinished and untested, but one that has persisted for decades despite inauspicious beginnings.
Two new sunspots have ended a long period of relative quiet on the surface of our blazing host star, heralding the start of a new 11-year cycle of sunspot activity.
One of our solar system's fundamental boundaries may have existed since the very beginning, a new study reports.
Excluding Mercury, this newly discovered asteroid has the smallest known aphelion distance in our entire solar system.
The swarm of earthquakes that have rocked Puerto Rico recently left marks that are visible from space.
Scientists recently identified the oldest material on Earth: stardust that's 7 billion years old, tucked away in a massive, rocky meteorite that struck our planet half a century ago.
When scientists search for alien planets, they get a special thrill when they find one that seems to reflect our own world back to us.
The first pristine pieces of Mars won't be coming down to Earth for at least another decade, but the time to start preparing society for the epic arrival is now, scientists say.
A new satellite will provide more detailed information about rising sea levels and other changes in Earth's oceans. Meet Sentinel-6/Jason-CS.
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