All articles tagged with #cosmic structure
Scientists are using fast radio bursts (FRBs) to locate the universe's missing baryonic matter, which is difficult to detect with traditional methods. Recent discoveries suggest that FRBs can serve as cosmic probes to map the distribution of ordinary matter, helping to solve the longstanding 'missing baryon problem' and improve understanding of cosmic evolution.
Astronomers, using gravitational lensing and advanced telescopes like Hubble and ALMA, have studied a distant galaxy from the early universe, revealing that it contains dense, clumpy star-forming regions rather than a smooth distribution, challenging previous models of galaxy formation and suggesting a more chaotic early cosmic environment.
Researchers using the James Webb Space Telescope found a non-random pattern in the rotation of ancient galaxies, leading to a hypothesis that the universe might be inside a massive black hole, though observational biases are also considered. This discovery could significantly alter our understanding of cosmic origins and structure.
Astronomers have discovered that our galaxy and over 400 others are being pulled toward an unseen massive structure called the Great Attractor, which is part of the larger Laniakea Supercluster, revealing complex gravitational forces shaping the universe's large-scale structure.
Astronomers have discovered that our galaxy, along with 399 others, is being pulled towards an unseen massive structure called the Great Attractor, located about 300 million light-years away, which influences the movement of galaxies within the universe's large-scale structure.
The article explores the role of supermassive black holes in anchoring tiny galaxies, highlighting that smaller galaxies tend to be more dark matter dominated and may host supermassive black holes, with some evidence suggesting a connection between black holes and the structure of these faint galaxies, especially in the context of dark matter and galaxy formation.
Without dark matter, the universe would lack the small-scale structures and galaxy formations we observe today, resulting in fewer galaxies, less complex cosmic web, and a universe less conducive to life due to the inability to recycle stellar material across generations.
The James Webb Space Telescope has discovered new galaxies in the Spiderweb Protocluster, a dense galaxy formation site over 10 billion light-years away, challenging previous assumptions about galaxy formation. Webb's infrared capabilities revealed galaxies with less dust obscuration than expected, suggesting that star formation in these regions may be driven by gas accumulation rather than galaxy interactions. This discovery offers new insights into the growth of large cosmic structures and the evolution of galaxies in the early universe.
An international team of scientists has found new evidence supporting Einstein's general theory of relativity through a study of the universe's structure over the past 11 billion years. Using data from the Dark Energy Spectroscopic Instrument (DESI), researchers observed that gravity behaves as predicted by Einstein, even as the universe's expansion accelerates due to dark energy. The findings, which align with the standard model of cosmology, suggest that dark energy might be dynamic, challenging previous assumptions of it being a constant force.
A new study published in Nature reveals that the Radcliffe Wave, a wave-shaped chain of stars and gas in our galactic neighborhood, is oscillating like a wave and may have passed over Earth 13 million years ago, potentially exposing our planet to a series of exploding stars. The wave's motion was detected using data from the Gaia project, and researchers speculate that it may have left unique isotopes on Earth. This discovery suggests that galaxies may be more dynamic than previously thought, and the cause of the wave's oscillation remains a mystery.
Astronomers have discovered a massive "bubble of galaxies" spanning a billion light years, believed to be a fossilized remnant from just after the Big Bang. The bubble, named Ho'oleilana, is located 820 million light years away from the Milky Way and contains the Bootes supercluster of galaxies. This discovery confirms a phenomenon first described in 1970 and provides insights into the early universe. The finding was published in The Astrophysical Journal and could lead to the identification of more bubbles using advanced telescopes.