Cosmic Queries – Why Are We Here?
StarTalk Radio
00:00
The Expansion of the Universe
The expansion of the universe likely never ending. Will individual galaxies be ripped apart by the expansion as objects get further apart from each other? Will individual bodies be then ripped apart and so forth? Yes. Ultimately, as galaxies spread apart, this pressure within the vacuum of space, we call it dark energy. It is most of what is driving the universe right now. That dark energy will ultimately overcome the gravitational attraction of stars that are held together within galaxies. And at that point, it'll rip apart the fabric of space and time on the plank scale. The big rip would take place in 22 billion years unless something stops it.
Transcript
Play full episode
