Galaxies

Marvel for a moment at the Milky Way’s night-sky spectacle—and the scientific revolutions it has sparked

The European Space Agency's ambitious Euclid space telescope is on its way to decoding the secrets of dark matter and dark energy

Astronomers are piecing together the final moments of supernova 2023ixf and learning more about it than any other in recent history

Voracious black holes feeding on matter in the early universe display the curious spacetime phenomenon known as time dilation

Astronomers found two colliding galaxies dating back to less than 500 million years after the big bang

The Euclid mission will probe dark energy and dark matter like never before, setting the stage for an international, multiobservatory push to solve some of the universe’s deepest mysteries

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

Telltale evidence gathered by the James Webb Space Telescope suggests we’re closer than ever before to finding elusive Population III stars

The death throes of a massive star in the galaxy M101, located just 21 million light-years away from Earth, are entrancing professional and amateur astronomers alike

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