New peer-reviewed research reporting strange lights in the pre-space-age sky is sparking curiosity and controversy ...

Optical sciences professor John Greivenkamp thought students were in danger of losing the connection to their field's beginnings. It was time to start collecting old telescopes to connect them with ...

The Calypso telescope, once the only privately owned telescope atop Kitt Peak, will begin its journey to its new home on Chile’s Cerro Pachón mountain soon. There, it will be used as a calibration ...

Travel back 390 million years after the big bang to the ancient Maisie's Galaxy in this stunning 3D visualization that ...