3 articles
New findings from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy, the force driving the universe's accelerated expansion, may be weakening. This challenges the long-held prediction of a Big Freeze and opens the possibility of a Big Crunch, while highlighting the incompleteness of our current cosmological models.
2025 has been a banner year for astronomy, with breakthroughs ranging from averted asteroid threats to the first images from the Rubin Observatory and tantalizing hints of life on exoplanet K2-18b. The year's top discovery was the interstellar comet 3I/Atlas, offering unique insights into alien solar systems.
New observations using the warped light of quasars and supernovae through gravitational lensing are helping to refine measurements of the universe's expansion rate. This technique, time-delay cosmography, is crucial for understanding the accelerating expansion and potentially solving the 'Hubble tension'.
