The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - ...

Long before humans walked the Earth, your solar system had a brush with two blazing blue stars that passed surprisingly close ...

A solar conjunction occurs as Venus' orbit carries it into alignment with the sun and Earth. Venus will align with the sun ...

Pandora, a University of Arizona satellite, is locked and loaded for launch into space, which is just hours away.

A study has cast doubt on the idea that Jupiter's moon Europa, where NASA has sent a spacecraft, could have conditions to ...

One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the ...

After years of planning, UofA's latest satellite is ready to blast off and study planets outside of our solar system.

Shining in the constellation Gemini near the bright stars Pollux and Castor, Jupiter's opposition is the best time to see the ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

The sun’s outer atmosphere resembles a pufferfish.

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

A new study reveals that tiny fragments of Earth's atmosphere are transported to and absorbed by the moon via gusts of solar ...