Astronomy

What astronomers can measure using telescopes is not what we really want to know – instead, we calculate the properties we're interested in studying by observing and interpreting apparent properties from afar.

When complete, the Square Kilometer Array Observatory (SKAO) will be the world's most powerful radio telescope — if SpaceX's Starlink satellites don't ruin its view.

A long-dead white dwarf star is running away from Hyades star cluster — and it could help astronomers solve a number of cosmic mysteries.

AI is the way forward in the search for extraterrestrial intelligence, from detecting radio signals to finding technosignatures on planets.

Astronomers worry that an impending future of widespread satellite constellations could darken our bridge to the stars.

The exoplanet K2-18b might host a water ocean.

Two previously discovered galaxies have been hiding strange perpendicular rings of stars and gas. These so-called polar ring galaxies may prove to be less rare in the universe than once thought.

Astronomers normally observe galaxies by observing light these objects emit, but some tricky galaxies require a different approach.

Astronomers have weighed the halos of dark matter that surround ancient galaxies with profound implications for our understanding of cosmic evolution.