Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and ...

The halo is more extended that astronomers originally thought, and contains enough hydrogen gas to resolve the problem of the ...

Scientists may have finally found the universe’s missing matter - hidden in invisible hydrogen gas far beyond galaxies.

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

A new analysis of the sky has finally confirmed where the missing half of the Universe's visible matter has been hiding.