Astronomers Think They’ve Found Examples of the First Stars in the Universe
Updated: 2024-04-30 17:27:13
Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in An artist's illustration of some of the Universe's first stars . Called Population 3 stars , they formed a few hundred million years after the Big Bang . Image Credit : By NASA WMAP Science Team https : www.nasa.gov vision universe starsgalaxies fuse_fossil_galaxies.html image link Public Domain , https : commons.wikimedia.org w index.php curid=1582286 Posted on April 30, 2024 April 30, 2024 by Evan Gough Astronomers Think They’ve Found Examples of the First Stars in the Universe When the first stars in the Universe formed , the only material available was primordial hydrogen and helium from the Big Bang . Astronomers call these original stars Population Three stars , and
: Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in Supernova remnant Puppis A Posted on April 29, 2024 April 29, 2024 by Mark Thompson First Light from Einstein Probe : A Supernova Remnant On 9 January 2024, the Einstein probe was launched , its mission to study the night sky in X-rays . The first image from the probe that explores the Universe in these energetic wavelengths has just been released . It shows Puppis A , the supernova remnant from a massive star that exploded 4,000 years ago . The image showed the expanding cloud of ejecta from the explosion but now , Einstein will continue to scan the skies for other X-ray events. The Chinese and European probe was designed to revolutionise our understanding of the
Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in Galactic Bar Posted on April 29, 2024 April 29, 2024 by Mark Thompson Galaxies Evolved Surprisingly Quickly in the Early Universe Anyone familiar with astronomy will know that galaxies come in a fairly limited range of shapes , typically spiral , elliptical , barred-spiral and irregular . The barred-spiral galaxy has been known to be a feature of the modern universe but a study from astronomers using the Hubble Space Telescope has recently challenged that view . Following on observations using the James Webb Space Telescope has found the bar feature in some spiral galaxies as early as 11 billion years ago suggesting galaxies evolved faster in the early Universe than
Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in Astronomers used the JWST's interferometry mode to study the PDS 70 extrasolar system . Image Credit : Blakely et al . 2024. Posted on April 29, 2024 April 29, 2024 by Evan Gough JWST Uses Interferometry Mode” to Reveal Two Protoplanets Around a Young Star The JWST is flexing its muscles with its interferometry mode . Researchers used it to study a well-known extrasolar system called PDS 70. The goal To test the interferometry mode and see how it performs when observing a complex target . The mode uses the telescope’s NIRISS Near Infrared Imager and Slitless Spectrograph as an interferometer . It’s called Aperture Masking Interferometry AMI and it allows the JWST to reach its
Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in This artist concept portrays the brown dwarf W1935. Credit : NASA , ESA , CSA , Leah Hustak STScI Posted on April 29, 2024 April 29, 2024 by Brian Koberlein A Cold Brown Dwarf is Belching Methane Into Space Brown dwarfs span the line between planets and stars . By definition , a star must be massive enough for hydrogen fusion to occur within its core . This puts the minimum mass of a star around 80 . Jupiters Planets , even large gas giants like Jupiter , only produce heat through gravitational collapse or radioactive decay , which is true for worlds up to about 13 Jovian masses . Above that , deuterium can undergo fusion . Brown dwarfs lay between these two extremes . The