Astronomers have discovered the first radio signals from a unique category of dying stars, called Type Ibn supernovae, and these signals offer new insights into how massive stars meet their demise.

NASA scientists are warning that the Sun’s internal engine is behaving in ways they have not seen in years, pointing to an abrupt shift in the star’s magnetic and energetic rhythms that drive space ...

Astronomers observed a massive, multi-temperature plasma eruption from a young Sun-like star, revealing how early solar explosions could shape planets. These fierce events may have influenced the ...

For the first time, a much younger version of the sun has been caught red-handed blowing bubbles in the galaxy by astronomers using NASA's Chandra X-ray Observatory. The bubble—called an "astrosphere" ...

Fifty-five years after the first Earth Day, climate activists organized a nationwide celebration of solar power. Fifty-five years after the first Earth Day, climate activists organized a nationwide ...