4 days ago · The Space topic features the latest news in astronomy, cosmology, planetary science, exoplanets, astrobiology and more.

Mar 18, 2025 · Astronauts Suni Williams and Butch Wilmore’s extended stay in the International Space Station will add to what we know about how space affects health.

Apr 24, 2025 · Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.

Dec 6, 2024 · Humankind accomplished new feats in space this year, including scooping up some of the moon’s farside and launching a probe to Jupiter’s moon Europa.

Jan 2, 2024 · Simply accumulating space doesn’t naturally define a forward arrow of time unless you introduce an external rule — which would reintroduce an absolute ordering the model seeks to …

Jul 10, 2025 · After careful consideration, we have made the difficult decision to close down the Space forums, effective July 17th. We'd like to thank all of you who have contributed to the …

Jul 10, 2025 · Seeking answers about space? Join the Space community: the premier source of space exploration, innovation, and astronomy news, chronicling (and celebrating) humanity's …

May 3, 2025 · Space doesn't stretch. Think of space in terms of water and the fluidity of water or the three forces with quantum stuff floating around, meaning that gravitational waves are created by …

Jan 4, 2021 · What I mean is like the solar system has planets revolving around a star and in atoms there are electrons revloving around protons and neutrons.

Mar 29, 2025 · In intergalactic space—the vast expanses between galaxies—the density is extremely low, with estimates suggesting less than one hydrogen atom per cubic meter.