Researchers claim to have found the oldest stellar disk in the Milky Way galaxy
Updated: 2024-10-15 18:20:02
A team of astronomers and astrophysicists at the Chinese Academy of Sciences and the University of Toronto has found what they believe is the oldest stellar disk in the Milky Way galaxy. In their study, reported in the journal Nature Astronomy, the group used high-α stars with substantial orbital angular momentum to conduct age determinations across a wide range of stars in the galaxy.
Using the Large High-Altitude Air Shower Observatory (LHAASO), an international team of astronomers have detected very-high-energy (VHE) gamma-rays around the pulsar PSR J0248+6021, which may be the pulsar's halo or a pulsar wind nebula. The finding was reported in a paper published October 6 on the pre-print server arXiv.
Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in Posted on October 14, 2024 October 14, 2024 by Andy Tomaswick How Gravitational Waves Could Let Us See the First Moments After the Big Bang Cosmology has had several ground-breaking discoveries over the last 100+ years since Einstein developed his theory of relativity . Two of the most prominent were the discovery of the Cosmic Microwave Background CMB in 1968 and the confirmation of gravitational waves in 2015. Each utilized different tools , but both lent credence to the Big Bang Theory , which relates to the universe’s formation . However , we still don’t understand a vital part of that formation , and a new review paper by Rishav Roshan and Graham White at the University
When NASA's OSIRIS-REx mission arrived at asteroid Bennu, its primary mission was to grab a sample and bring it home to Earth. But researchers also tracked its movements carefully throughout the encounter, and this data could help physicists probe for additional forces in the Universe. Although additional forces haven't been found, the observations help set constraints on what's possible. The spacecraft's upcoming encounter with Apophis will continue the experiment.
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Skip to content Universe Today Space and astronomy news Menu Videos Newsletter Podcast Contact Us Support Us Log in A simulation of galaxies during the era of deionization in the early Universe . Credit : M . Alvarez , R . Kaehler , and T . AbelCredit : M . Alvarez , R . Kaehler , and T . Abel Posted on October 13, 2024 October 13, 2024 by Matt Williams Webb Observations Shed New Light on Cosmic Reionization The Epoch of Reionization was a critical period for cosmic evolution and has always fascinated and mystified astronomers . During this epoch , the first stars and galaxies formed and reionized the clouds of neutral hydrogen that permeated the Universe . This ended the Cosmic Dark Ages and led to the Universe becoming transparent , 8221 what astronomers refer to as Cosmic Dawn According