At Armagh Observatory, Italian-born astronomer Dr. Stefano Bagnulo shares his lifelong passion for astronomy, his ...

An invisible monster lurks beyond the stars of the constellation Sagittarius near the border with Scorpius: a supermassive black hole, designated as Sagittarius A* (pronounced “Sagittarius A-star”), ...

A consensus is emerging that the dots, sometimes called rubies, are an entirely new type of object in the Universe. When the James Webb Space Telescope (JWST) looked back in time to observe the ...

Donald G. York, an astronomer with the University of Chicago who helped revolutionize the field as a co-founder of the Sloan Digital Sky Survey and made pioneering contributions to the study of the ...