In 2013 Hubble found signs of Earth-like planets in the atmospheres of a pair of white dwarf stars roughly 150 light-years away and only 625 million years old.

Apr 24, 2002 · These extremely old, dim "clockwork stars" provide a completely independent reading on the age of the universe without relying on measurements of the expansion of the …

wdwarfdate derives the Bayesian total age of a white dwarf from an effective temperature and a surface gravity. It runs a chain of models assuming single star evolution and estimates the …

Dec 18, 2018 · White dwarfs are some of the oldest observable objects in the universe. Their age and relative stability provide a window in the history of our galaxy and our universe as a whole. …

Learn how white dwarfs are formed when smaller stars run out of hydrogen fuel and collapse under gravity. Discover how white dwarfs cool over time and how they can explode in a …

3 days ago · When a star less massive than about eight times the mass of the Sun dies, it leaves behind a white dwarf: a crystallized stellar core roughly the size of Earth.With initial …

Mar 11, 2024 · The discovery that some white dwarfs cool more slowly suggests these stars may be billions of years older than estimated. This finding requires new age-calculation methods for …

The white dwarf cooling anomaly is an additional cooling delay that has been observed for ultramassive forms of these compact stellar remnants. [1] [2] As a white dwarf cools, …

White dwarfs are remarkable remnants of stellar evolution, offering a window into the life cycles of stars and the dynamics of the universe. Their formation process, characteristics, and role in …

Dec 1, 1999 · By adding the one billion years it took the cluster to form after the Big Bang, astronomers found that the age of the white dwarfs agrees with previous estimates that the …

Apr 18, 2024 · A new study suggests that some white dwarfs undergo a process that slows down their cooling and makes them appear younger than they are. This could affect the age …

White dwarfs are thought to be the final evolutionary state of all stars whose mass is not high enough to supernova — more than 97 percent of the stars in our galaxy. White dwarfs have …

By analyzing their cooling rates and brightness, astronomers can estimate the age of white dwarfs. Space missions like Gaia have helped identify thousands of white dwarfs and their …

Feb 13, 2025 · The white dwarf star’s habitable zone – the region in which an exoplanet could host life-supporting liquid water, among other traits – is much closer to the star compared to …

With such long timescales for cooling (due mostly to the small surface area through which the star radiates), and with the age of the Universe currently estimated at 13.7 billion years, even the …

6 days ago · The low-mass end of the white dwarf mass distribution also requires binary evolution to be explained. Only stars with masses above 0.45 M ⊙ have had time to evolve off the main …

6 days ago · White dwarf stars are the most common final stage of stellar evolution. Since the serendipitous discovery of the first white dwarf by William Herschel and the first physical …

Apr 24, 2002 · By adding the one billion years it took the cluster to form after the Big Bang, astronomers found that the age of the white dwarfs agrees with previous estimates that the …

2 days ago · But the white dwarf planet moves much faster than Mercury! Our sun’s innermost planet has 88 Earth-days in its year. The white dwarf planet completes an orbit around its star …

1 day ago · White Dwarf 510 is packed with content, and this issue puts the spotlight on the new edition of the Middle-earth Strategy Battle Game. Over 30 pages are dedicated to the changes …

3 days ago · The Dwarf III smart telescope ships with a padded carry bag, ND filter plus pouch, USB cable and cleaning cloth