Stellar streams are trails of stars that astronomers can study to solve mysteries about the history of our Milky Way galaxy ...

Using the Mayall 4-meter telescope at Kitt Peak National Observatory, an international team of astronomers has observed ...

Amid the vast darkness of the Milky Way’s halo, a faint, enigmatic trail of stars has been spotted, one that could rewrite ...

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 ...

Researchers have uncovered evidence for our sun joining a mass migration of similar "twins" leaving the core regions of our ...

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 ...

Stellar activity and plasma turbulence could distort narrow radio signals before they leave their home planetary systems, potentially explaining part of the long silence in the search for ...

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 ...

New high-resolution simulations reveal that stellar rotation plays a crucial role in transporting material inside red giant stars.

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.