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Crash Course Astronomy
The Big Bang, Cosmology part 1: Crash Course Astronomy #42
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING!
Dark Energy, Cosmology part 2: Crash Course Astronomy #43
Welcome to school without the classroom! Join host Phil Plait and discover everything there is to know about the cosmos.
Dark Energy, Cosmology part 2: Crash Course Astronomy #43
Season 1 Episode 43 | 11m 8s
The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand forever, even as our view of it shrinks while space expands faster all the time.
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