Jim Parsons made a surprise appearance on the series finale of "Young Sheldon" but he looked very different from the familiar ...

First footage from Stuart Fails to Save the Universe, HBO Max's Big Bang Theory spin-off reveals a bold new look.

While GRBs are second only to the Big Bang in explosive power, the window of visibility for most of these flashes ranges from ...

Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they ...

Using the James Webb Space Telescope, an international team of researchers led the Center for Astrophysics | Harvard & Smithsonian have discovered chemical fingerprints of gigantic primordial stars ...