An ultramassive black hole so huge it could swallow 30 billion suns has emerged from the cosmic background, revealed not by ...
New gravitational lensing measurements by the TDCOSMO Collaboration support the Hubble Tension, confirming differences between Early and Late Universe Hubble Constant values using updated ...
Gemini North observations reveal interstellar comet 3I/ATLAS has brightened and developed a green coma after perihelion, ...
Astronomers are closing in on a result so statistically secure that, in their language, it borders on certainty: a 99.9999999 ...