All articles tagged with #cosmology
Astronomers are studying a newly identified ultra-massive object (~1 million solar masses) whose core appears to be a black hole, a discovery that challenges current models of extreme gravity and the formation of massive cosmic structures.
Researchers propose an extended gravity theory called Finsler gravity that broadens spacetime geometry; when applied to the Friedmann equations, it naturally yields cosmic acceleration without a dark energy term, suggesting geometry could drive the universe’s speeding expansion.
Part 2 explores Max Tegmark’s Mathematical Universe Hypothesis, arguing that the universe may be fundamentally mathematical and that human concepts are “baggage” to be stripped away. By applying Occam’s razor, the piece suggests reality reduces to pure math—relationships and structures—so a final theory of everything could be a single mathematical description that explains all of reality, potentially eliminating constants, dimensions, and the need for a separate physics framework.
Astronomers using the Hubble Space Telescope discovered Cloud-9, a rare starless, gas-rich cloud of dark matter that is on the verge of becoming a galaxy, providing evidence supporting the Lambda cold dark matter model and offering insights into dark matter halos and galaxy formation.
A billionaire-backed organization, Schmidt Sciences, is developing a suite of four observatories, including Lazuli, a large space telescope comparable to Hubble but at a fraction of the cost and in a shorter timeframe, aiming for launch around 2028 to advance astrophysics and cosmology research.
Scientists, including Dr. Rupak Mahapatra, are making progress in understanding dark matter and dark energy, which constitute about 95% of the universe. Using advanced cryogenic detectors like TESSERACT and building on decades of research, they aim to detect elusive particles such as WIMPs, potentially unlocking fundamental secrets of the cosmos and expanding our understanding of physics.
Scientists discovered an extremely hot and old galaxy cluster from just 1.4 billion years after the Big Bang, which challenges current cosmological theories. The cluster's unexpected heat is likely due to energy from supermassive black holes at its core, suggesting galaxy clusters evolve more explosively than previously thought, potentially reshaping our understanding of the early universe.
New research suggests dark matter may interact with neutrinos, which could explain why the universe is less 'clumpy' than expected and challenge current cosmological models. Future observations, including cosmic microwave background studies and gravitational lensing, aim to test this hypothesis, potentially leading to a major breakthrough in understanding dark matter.
Recent research suggests the universe may be lopsided, challenging the standard cosmological model that assumes it is uniform in all directions, due to discrepancies like the cosmic dipole anomaly which do not align with current theories, prompting a potential overhaul of our understanding of the cosmos.
This study reports the detection of hot intracluster gas at redshift 4.3 using the Sunyaev–Zeldovich effect, providing insights into the formation and evolution of galaxy clusters in the early universe.
A new study suggests that dark energy may be weakening, potentially leading to a reversal of the universe's expansion and a catastrophic collapse into a Big Crunch, challenging long-held scientific beliefs and sparking debate among astrophysicists.
Recent studies suggest that dark energy, which is driving the universe's expansion, may be weakening, potentially leading to a reversal of expansion and a possible 'Big Crunch' instead of the previously believed continuous acceleration. This challenges current cosmological models and has sparked significant debate among astronomers.
Scientists may have identified light from the universe's first stars, known as Population III, using the James Webb Space Telescope and gravitational lensing, marking a significant breakthrough in understanding the early cosmos.
Some physicists propose that our universe might exist inside a black hole of a larger cosmos, based on theories linking black hole information paradoxes, holography, and cosmic geometry, suggesting a universe within a universe concept that challenges traditional views of space and time.
Recent research suggests that the relationship between ultraviolet and X-ray emissions in quasars has changed over billions of years, challenging long-held assumptions about the uniformity of matter surrounding supermassive black holes and impacting methods used to study the universe's structure and evolution.