Cosmology
Octoberās Night Sky Notes: Letās Go, LIGO!
Octoberās Night Sky Notes: Letās Go, LIGO! September 2025 marks the 10th anniversary of the first direct detection of gravitational waves by LIGO, a milestone that confirms Albert Einstein’s 1916 theory of General Relativity. Gravitational waves are ripples in space-time created by massive objects accelerating in space, such as black holes merging or stars going […]
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āExtraordinary claims require extraordinary evidenceā ā an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life
āExtraordinary claims require extraordinary evidenceā ā an astronomer explains how much evidence scientists need to claim discoveries like extraterrestrial life Scientists searching for extraterrestrial life need extraordinary evidence to support their claims, as suggested by Carl Sagan’s phrase “Extraordinary claims require extraordinary evidence.” The detection of life on K2-18b, a planet in another star system, […]
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Dark energy may have once been āspringierā than it is today ā DESI cosmologists explain what their collaborationās new measurement says about the universeās history
Dark energy may have once been āspringierā than it is today ā DESI cosmologists explain what their collaborationās new measurement says about the universeās history Dark energy measurements from the DESI collaboration suggest that the universe was expanding slightly faster a few billion years ago than it is today, implying that dark energy’s “springiness” was […]
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