Analysis suggests that instead of the universe continuing to expand, galaxies could be pulled back together via gravity.

James Webb observations detect warm carbon monoxide gas in the inner disk of HD 131488, revealing non-equilibrium conditions and evidence of exocomet-driven gas replenishment near the star.

So, to create a must-read story list for you, we asked our staff to select their favorite pieces of 2025. Alas, while you're ...

Harvard's Avi Loeb warns that interstellar comet 3I/ATLAS defies standard physics, raising the stakes for planetary defence ...

Satellite reentry can release nitrogen oxides and alumina, impacting the ozone layer and stratosphere. Alternatives like Design for Non-Demise and controlled reentry aim to reduce environmental and ...

Three Americans and one Canadian will zip past the moon, do a U-turn behind it, then hustle straight back to Earth to close ...

The Artemis II mission, which could launch as early as February, is expected to send four astronauts on a trip to the moon, ...

The universe has likely shifted from a period of acceleration to a phase of deceleration, new study by Korean researchers ...