Stars like our own Sun produce “superflares” around once every 100 years, surprising astronomers who had previously estimated that such events occurred only every 3000 to 6000 years. The result, from ...

A star like the Sun is at equilibrium - gravity tends to pull it inwards, and radiation pressure from the nuclear reactions tends to expand it outwards. In other words, the gravitational collapse ...

After our Sun becomes a white dwarf and cools completely, what will be left? Richard LivitskiSeal Beach, California Our Sun ...

"We have by and large been ignoring triples in models and simulations — we're just starting to understand how these types of ...

"According to standard solar models, when nuclear fusion ignited in the core of the Sun at the time of its arrival on what is ...

New ground- and space-based infrared observations are giving astronomers a better handle on the true populations of red ...

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior. Sunspots, which are temporarily darkened areas on the surface of the sun, are the result of ...

Discover the fascinating story of the 'blue lurker,' a mysterious star in the M67 star cluster studied by NASA's Hubble ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

"This tells us that objects like white dwarfs may be able to live very close to an event horizon for a relatively extended period of time." ...

Graphic representation of the relative distances between the nearest stars and the Sun. Barnard’s ... [+] star is the second closest star system to the Sun, and the nearest single star to us.