The Extravagant Universe Exploding Stars, Dark Energy and the Runaway Universe

Date: 2021-04-03 00:57:47

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Some of the most powerful objects in the Universe are exploding stars known as supernovae. Observations of very distant supernovae provided the first evidence that our Universe is accelerating in its expansion, likely due to a repulsive and mysterious “dark energy.” Jeff will talk about how we find and study supernovae and why you should care about them (aside from the simple fact that big explosions are awesome!).

Over the largest distances, the universe seems to be dominated by a mysterious, repulsive “dark energy” that stretches space itself faster and faster with time. But the physical origin and nature of dark energy, which makes up about 70 percent of the contents of the universe, may be the most important unsolved problem in all of physics.

Credit: “Exploding Stars, Dark Energy, and the Runaway Universe”
by Jeffrey Silverman