Content tagged "dark matter".
4 items (4 articles, 0 stories)
Primordial black holes may have formed before the universe was even a second old. Unlike black holes born from dying stars, they could be lighter than the Sun. By 2026, gravitational-wave detectors had logged 390 events — but the one that would prove it still hasn't shown up. SORABUMI explains.
Galaxy clusters — the most massive objects in the universe — may contain roughly twice the baryonic mass astronomers have long assumed. The culprit is something no one bothered counting seriously: the accumulated remains of dead stars.
Starting in 2026, Rubin Observatory photographs the entire southern sky every 3–4 days and fires off around 100,000 change alerts each night. For the first time, astronomers have a systematic record of everything that flickers, explodes, or moves when no one is watching. Here's what that means for astronomy.
Stars, galaxies, gas — everything we can observe makes up just 5% of the universe. The other 95% is something we can't see. Dark matter and dark energy sit at the heart of modern cosmology, and we still don't know what either of them is.