Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

All supernovae are exploding stars. But the nature of a supernova explosion varies quite a bit. One type, named Type 1a supernovae, involves a binary star where one of the pair is a white dwarf.

This NASA/ESA Hubble Space Telescope Picture of the Week features the galaxy LEDA 22057, which is located about 650 million ...

Opinions expressed by Forbes Contributors are their own. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. Science fiction authors have long had a field day with the potential ...

The closest supernova candidate isn’t a giant star at all. IK Pegasi is a binary system that has at least some of the characteristics required to create a Type 1a supernova. However, systems ...

This white dwarf collision will trigger a specific type of supernova called type 1a that always produces the same amount of light. Astronomers can tell how far away each type 1a supernova is by ...