A sunspot that "awoke from the dead" last week triggered stunning aurora above Iceland.
After a dead sunspot hurled a ball of plasma toward Earth earlier this week, medium-sized auroras may stretch even farther south than usual.
Scientists may have detected the first known 'transitioning red quasar' in the universe, dating to just 750 million years after the Big Bang.
A surprising new study has revealed that atmospheric temperatures in Neptune's southern hemisphere have decreased in the past 17 years, despite the region entering its summer.
Astronomers gazed into the icy, black heart of comet Bernardinelli-Bernstein, and found it is more massive than any comet nucleus ever seen.
The "corpse" of a sunspot exploded Monday (April 11), triggering a mass ejection of solar material that is headed in Earth's direction.
In new research, scientists have spotted a hot, Jupiter-like gas giant in the process of forming around a star about 500 light-years from Earth.
The five naked-eye planets in the solar system will line up across the predawn sky this spring and summer. Here's how to watch.
A small meteor that crashed into Earth in 2014 has been verified as an interstellar object, a new U.S. government report reveals.
An ultraprecise measurement of the mass of the W boson may diverge from the Standard Model, a long-reigning framework that governs the strange world of quantum physics.
The 2024 Great North American Total Solar Eclipse's 'totality' will pass over 31.5 million people in 15 states in 2024.
Astronomers have created the most detailed map yet of the magnetic field within one of the Milky Way's galactic bones.
A spinning orb of light that slowly moved across the sky in Alaska on March 29 was actually frozen fuel left by a Chinese rocket, according to experts.
The possible galaxy, located 13.5 billion light-years from Earth, has broken the record for farthest astronomical object ever seen.
The director general of Russia's Roscosmos space agency has threatened to end its Russia's involvement with the ISS.