Milky Way

The discovery that life on Earth looks a lot like information propagating itself offers new clues, and new directions, to the hunt for life elsewhere

Observations from the James Webb Space Telescope suggest that TRAPPIST-1 c, the second world in a seven-planet system, lacks an atmosphere

Bold new simulations suggest the James Webb Space Telescope might be able to distinguish between competing dark matter models by studying primordial dwarf galaxies

More and better data are required to solve the mystery of strange apparitions in the air, the sea and space, according to NASA’s Unidentified Anomalous Phenomena Independent Study team

Researchers have gained a new view of the journey ahead for the twin Voyager spacecraft and other probes bound on one-way trips into interstellar space

Human intelligence may be just a brief phase before machines take over. That may answer where the aliens are hiding

Cell-phone towers leak radio waves into space, but they’ll be tough for aliens to detect

Researchers still hope to discover hundreds of new binary black hole mergers despite technical setbacks that have sidelined key detectors in Italy and Japan

After years of downtime for upgrades, the world’s premier gravitational-wave observatories are coming back online with big hopes for transformative discoveries

White dwarfs, Earth-sized exoplanets, early galaxies and even Saturn’s moon Enceladus are on the agenda for JWST’s second year in space, but exomoons and others miss out

Betelgeuse, the red star at the shoulder of the constellation Orion, has been acting strange, raising hopes for the spectacle of a lifetime

A new way to gauge the universe’s expansion rate has delivered a confusing result that may conflict with previous related measurements