Stellar astronomy and planetary systems form a cornerstone of astrophysical research, uniting our understanding of the life cycles of stars with the intricate architecture of the systems that form ...

The twinkling stars in the night sky are not just beautiful to look at. Their flickering reveals something about the varying ...

The most massive black holes in the universe detected by the ripples they make in spacetime were not born directly from ...

They’re bright and blue — and a bit strange. They’re a new type of stellar explosion that was recently discovered by a team of astronomers led by the California Institute of Technology (Caltech).

The study of stellar astrophysics and galactic structure investigates the life cycles of stars and the organisation of galaxies. At its core, the field explores how stellar evolution, from the ...

Astronomers have confirmed the existence of a companion star in a tight orbit around Betelgeuse, resolving a long-standing mystery about the star’s varying brightness. A 600-year-old stellar event ...

Astronomers using NASA’s Chandra X-ray Observatory have clocked the fastest wind yet discovered blowing off a disk around a stellar-mass black hole. This result has important implications for ...

Plans are underway to add a seventh movable telescope to Georgia State University’s Center for High Angular Resolution Astronomy— known as the CHARA Array—that would increase the resolution, or the ...

Astronomers present an explanation for the mesmerising shapes of planetary nebulae. The discovery is based on an extraordinary set of observations of stellar winds around ageing stars. Contrary to ...

For the first time, astronomers have used X-ray data to observe the sea of charged particles that radiates off a trio of bright stars. This outward flow, called stellar wind, plays a critical role in ...

Eliza Frankel, a University of Wyoming physics and astronomy Ph.D. student, poses with her award-winning poster at a meeting of the American Astronomical Society in Phoenix, Ariz. in early January.