What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

At times, the sun ejects energetic material into space, which can have consequences for space-based and even ground-based ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

Scientists have found new evidence suggesting that interstellar 3I/ATLAS is not an alien spaceship, as one conspiracy theory ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

New research suggests that amino acids, the fundamental components of life, may have arrived on Earth carried by interstellar ...

Comet C/2025 R3 (PanSTARRS) might be the brightest comet of the year, scientists predict.

At extreme pressures and temperatures, water becomes superionic — a solid that behaves partly like a liquid and conducts ...

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

NASA’s Interstellar Mapping and Acceleration Probe (IMAP) has reached its destination of the first Sun-Earth Lagrange point ...