Universe

Polarized light from Sagittarius A*, our galaxy’s supermassive black hole, shows swirling magnetic fields that may hint at the presence of an unseen jet

A nova called T Coronae Borealis spectacularly erupts every 80 years. Your only chance to see it will come any day now

The Chandra X-ray Observatory faces a premature end under new funding cuts proposed by NASA—and astronomers aren’t happy

The scale of the cosmos exceeds the bounds of human comprehension. But that doesn’t mean the universe is beyond our understanding

The next year of science for the James Webb Space Telescope has been selected. It includes remote galaxy observations and, at last, a hunt for exomoons

A new generation of lab experiments is aiming to weigh neutrinos with astonishing accuracy

The Thirty Meter Telescope and Giant Magellan Telescope might need to compete for survival in the face of federal spending limits

A new catalog of more than 12,000 galaxy clusters is helping scientists better understand the universe’s clumpiness, dark energy and some of the smallest particles in the cosmos: neutrinos

Some of the faintest objects ever observed suggest that small galaxies were responsible for clearing the “fog” pervading the early cosmos

Scientists have proposed a new way to learn whether hypothetical particles called axions really exist—and whether axions make up most of the universe’s dark matter

Researchers have created ultraheavy versions of elements that have never existed before on Earth

The quasar, as bright as 500 trillion suns, has evaded astronomers for over 40 years because of its incredible luminosity