Cosmic anomaly hints at frightening future for Milky Way

Astronomers have spotted a cosmic anomaly: a huge, delicate spiral galaxy with massively powerful jets. What does this mean for our Milky Way galaxy?

Most distant known galaxy is mature in a baby universe

Astronomers have discovered oxygen in the most distant known galaxy. So, the stars are surprisingly older than we'd expect for the early universe.

A new data release hints dark energy may be weakening

A new data release from the Dark Energy Spectroscopic Instrument hints that the universe's dark energy is not constant and may be weakening over time.

New Euclid images reveal hidden gravitational lenses

New Euclid images dive deep into our universe, unveiling millions of galaxies, along with galactic clusters, quasars and gravitational lenses.

Rare Kuiper Belt triplet might be one of many

Is Altjira a Kuiper Belt triplet system? Astronomers thought there were 2 rocky objects close together. But new Hubble and Keck observations suggest it's 3.

Life on Mars? Odd rings and spots tantalize scientists

Two new science papers make the case that "leopard spot" and "poppy seed" features in an ancient river rock might be the long-sought evidence for life on Mars.

Exciting! 4 new mini-Earth exoplanets at nearby star

Astronomers have confirmed 4 mini-Earth exoplanets orbiting Barnard's Star, a red dwarf and the closest single star to our solar system.

New Mars and Deimos pics from revealing Hera flyby

Hera is on its way to investigate the aftermath of our collision with an asteroid. But first it flew past Mars. See the new Mars and Deimos pics here.

Uranus discovered by accident on this date in 1781

William Herschel spotted Uranus in 1781 during a routine survey of the stars. It was the 1st new planet found since ancient times.

Powerful supernovas led to at least 2 mass extinctions

Researchers said that 2 of Earth's 5 mass extinction events were likely the result of nearby supernovas destroying Earth's ozone layer.