Giant gas planet orbiting a dead star gives glimpse into the predicted aftermath of our…
Browsing: White Dwarf
A white dwarf is a small, dense stellar remnant left after a star like our Sun has exhausted most of its nuclear fuel and expelled its outer layers. Typically about the size of Earth but containing the mass of about half to 1.4 times that of the Sun, white dwarfs represent the final evolutionary state of stars that do not have sufficient mass to continue nuclear fusion into heavier elements, a fate shared by over 97% of the stars in the Milky Way. These stellar remnants are incredibly dense, with their material compressed to a quantum state known as electron degenerate matter. White dwarfs no longer undergo fusion reactions, so they do not generate new energy; instead, they emit only residual thermal energy, slowly cooling over billions of years. The ultimate fate of a white dwarf is to cool and dim, eventually becoming a black dwarf — a theoretical endpoint when it no longer emits significant heat or light.
A stellar merger produced the most massive, smallest white dwarf ever seen. Astronomers have discovered…
University of Warwick astronomer co-authors new study in Nature Astronomy that proposes a solution to…
Remnants of planets with Earth-like crusts have been discovered in the atmospheres of four nearby…
Exploring new method for measuring galactic evolution of lithium. For the first time, hard-to-track lithium…
The violent events leading up to the death of a star would likely drive away…
For just the second time ever, astrophysicists have spotted a spectacular flash of ultraviolet (UV)…
Scientists study how charged particles arrange themselves into crystalline patterns and apply what they learn…
Data captured by ESA’s galaxy-mapping spacecraft Gaia has revealed for the first time how white…
Astronomers have detected an unusual X-ray outburst from a white dwarf in the Small Magellanic…
University of Canterbury astrophysicist Dr. Simone Scaringi has made an unexpected and exciting new discovery…
An international team of astronomers has found the first observational evidence for a contracting white…
Using the Swift Satellite Observatory, scientists reveal what was likely the most luminous white dwarf…
New research from the Harvard-Smithsonian Center for Astrophysics identifies exomoons as a likely source of…
A team of astronomers from the Harvard-Smithsonian Center for Astrophysics has discovered white dwarf stars…
Using the Keck Telescope and the Hubble Space Telescope, astronomers reveal the existence of a…
Using NASA’s Hubble Space Telescope, a team astronomers has found the first evidence of the…
Using the Very Large Telescope, an international team of astronomers has studied in detail for…