Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them to 'reappear'.

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From groundbreaking research aboard the International Space Station to dazzling new ...

You might think only billion-dollar telescopes and professional observatories can contribute to cutting-edge space science.

Their new study shows that Earth’s massive drop in temperature after the dinosaurs went extinct could have been caused by a large drop in calcium levels in the ocean. The study showed that the ...

Coming from one of the world's largest astrophysical research institutes, I can tell you, the anticipation across the global ...

Ahead of the anticipated launch of the Artemis II mission, catch a glimpse of February’s full moon, called the snow moon.

Astronomers have discovered how "forever young" stars stay blue and bright despite being almost as old as the universe.

Astronomers have discovered powerful magnetic fields steering gas, dust, and star formation in a dramatic galaxy merger.

Cosmic radio pulses repeating every few minutes or hours, known as long-period transients, have puzzled astronomers since ...

Comet C/2025 K1 (ATLAS) crumbled in high-resolution footage captured by the Gemini North telescope atop Mauna Kea in Hawaii. Glowing pieces of the comet are visible in the 8.1-meter diameter ...

Astronomers have traced the origin point of a jet of material that is thousands of light-years long emanating from the ...