Two of the universe’s most extreme objects—black holes and neutron stars—can spiral into cosmic collisions that crack crusts, ...

A brilliant new class of cosmic explosions has been uncovered—so powerful they outshine anything scientists have ever seen.

Everything in space—from Earth and the sun to black holes—accounts for just 15% of all matter in the universe. The rest of ...

Its depiction of space travel and its relation to time has long been a talking point for viewers, who think that we're being ...

NASA's NICER (Neutron star Interior Composition Explorer), an X-ray telescope on the International Space Station, has paused ...

With the release of its first images this month, the Vera C. Rubin Observatory has begun a 10-year mission to help unravel the mystery of dark matter. The observatory will continue the legacy of its ...

These cosmic filaments contain 12 trillion solar masses of 10-million-degree gas, helping solve the "missing matter" mystery.