Evidence is mounting that cosmic dark energy, long thought constant, may weaken with time - potentially altering the fate of ...

Everything in the sky felt upside down and opposite, compared with what I was used to. A person who lives in the Southern Hemisphere might feel the same about visiting the Arctic or the North Pole.

The South Pole Telescope has released its most precise image yet of the universe’s first light—the cosmic microwave background. This new ground-based data confirms cosmic expansion anomalies and ...