Stellar spectral types originally followed alphabetical order. But as astronomers observed more stars and obtained more detailed spectra, they consolidated some categories and reordered the remaining ...

DOVER, DE- The legacy of Annie Jump Cannon, a pioneering Dover native who revolutionized stellar classification, is being remembered today. Cannon, born 161 years ago on this day in 1863, made ...

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 ...

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 ...