Space is filled with a variety of objects, some blisteringly hot, some tremendously cold, but areas with little to nothing at ...

For a long time, dark matter was believed to be cold after separating from the intense radiation that filled the young ...

Dark matter, one of the Universe’s greatest mysteries, may have been born blazing hot instead of cold and sluggish as ...

Researchers from the University of Minnesota Twin Cities and Université Paris-Saclay have reopened one of cosmology’s oldest ...

The largest structures in the universe are galaxy clusters—groups of galaxies held together by gravity. Their developmental ...