Cosmology

Space Alaknanda: Ancient spiral galaxy challenges existing knowledge of cosmic evolution

Astronomers discover a mature spiral galaxy just 1.5 billion years after the Big Bang, challenging theories of galaxy formation.

Space Nearby red giant challenges how stars spread the building blocks of life Joseph Shavit

Space Astronomers reveal how the Milky Way’s violent youth forged a calmer spiral giant Joseph Shavit

Space Cosmic blast looked like a kilonova, then turned into a superkilonova mystery Joseph Shavit

Space 10 billion-year-old supernova sheds new light on cosmic expansion and dark energy Joseph Shavit

Space Uranus’s extreme radiation belts linked to ancient solar wind event Joseph Shavit

Space Colliding galaxies ignite the universe’s most powerful black holes, Euclid data finds Joseph Shavit

Space Tidal discovery offers new insight into how ‘hot Jupiters’ formed Joseph Shavit

Space Astronomers discover spacetime drag around a supermassive black hole — as predicted by Einstein Joseph Shavit

Space Astronomers spot closest giant planet orbiting binary stars ever observed Joseph Shavit

Space JWST may have found a thick atmosphere in an unexpected place — an ultra-hot super-Earth Joseph Shavit

Space The seven-hour flash: Astronomers discover the longest gamma-ray burst on record Joseph Shavit

Space New gravitational lens measurements reveal a faster expansion rate for the universe Joshua Shavit

Space The Milky Way’s stars reveal a hidden history of two galaxies in one Joseph Shavit

Space A massive new project maps dark matter using 100 million galaxies Joseph Shavit

Space Astronomers reveal how passing stars and exploding giants shaped our early solar system Joseph Shavit

Space Neutrinos may explain why anything exists at all, study finds Joshua Shavit