In 1925, grad student Cecilia Payne first proposed that stars were mostly made of hydrogen and helium and shaped our ...

The James Webb Space Telescope has spotted one of the earliest and most distant supernovas, marking the death of a stellar ...

Helium-rich subdwarf O stars (He-sdOs) are hot compact stars in a pre-white dwarf evolutionary state. They are the natural ...

The youngest and most metal-rich stars, such as the Sun, are called Population I. Older stars with fewer metals are ...

The Milky Way's stars have a wide variety of ages, sizes, and abundances of metals (elements heavier than hydrogen or helium) ...

01 times that of our own sun, but their mass is about the same. Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they ...