(via Sabine Hossenfelder) Dark matter is a mysterious substance which makes up roughly 85% of the matter in the universe. But physicists have yet to figure out what dark matter actually is. In a new ...

(via Sabine Hossenfelder) According to a growing body of data, dark energy is not constant. Instead, physicists claim, it’s slowly getting weaker. This has understandably shaken our understanding of ...