What's the worst that could happen from the Russian missile test that blasted more than 1,500 pieces of space debris into Earth orbit?
A photographer in Zurich, Switzerland, spotted the glowing object while four SpaceX astronauts returned to Earth thousands of miles away.
An ultrabright, ultrafast explosion called the Camel lit up the sky for a month in 2020. Astronomers think it might have been the birth of a black hole or neutron star.
Physicists propose a new plan to "slice and dice" incoming asteroids that could save Earth from a deadly calamity.
NASA's DART mission will crash a spaceship into an asteroid at 15,000 mph. The mission launched in November.
NASA's Mars Reconnaissance Orbiter spied the little Perseverance Rover chugging around Jezero Crater in a striking new image.
Scientists have analyzed the enormous Bernardinelli-Bernstein comet, and predict it will come within 11 AU of Earth in the next 10 years.
In the star system GW Ori, three stars orbit one another. New research suggests there's probably a planet in the mix, too.
A moderate solar storm is headed for Earth on Sept. 27, 2021, with auroras predicted to light up the sky much further south than usual.
An asteroid measuring about three times the size of the Statue of Liberty will sail harmlessly by Earth on Sept. 22, the 2021 fall equinox.
ISS astronaut Thomas Pesquet captured a trippy new photo of orange 'airglow' streaming past the sideways Earth.
Scientists detected a repeating radio signal near the center of the Milky Way, and it's unlike anything else they've ever studied.
A catastrophic solar storm could take huge sections of the Earth offline for weeks or months, a new research paper warns.
Researchers studied geothermal heat flow below West Antarctica, and found that the infamous Thwaites Glacier is being disproportionately cooked from below.
Two aircrafts flying over Canada reported a "bright green UFO" that disappeared into the clouds on July 30.
A new report signed by 14,000 scientists assesses Earth's 'vital signs,' and finds 'untold suffering' awaits if climate change isn't dealt with soon.
When Earth's sun grows into a red giant 5 billion years from now, solar wind will shred our planet's magnetic field to bits.
After more than a month in safe mode, the Hubble Space Telescope is back online. A wonky power regulator circuit may be to blame.
Astronomers detected a rare teardrop-shaped star that is being ripped apart by an invisible white dwarf, pushing the pair toward an inevitable supernova explosion.
Coastal flooding could quadruple in the US in the 2030s, a new study of the lunar cycle and sea level rise finds.
Researchers found evidence of an elusive magneto-rotational hypernova explosion for the first time ever.
Scientists used solar wind to make the first 3D map of the heliosphere, which protects Earth from deadly cosmic radiation.