Learn about the universe (that's everything, right?)
- 1,747,744 Views
- Best of Web
How did the universe begin -- and how is it expanding? CERN physicist Tom Whyntie shows how cosmologists and particle physicists explore these questions by replicating the heat, energy, and activity of the first few seconds of our universe, from right after the Big Bang.
The atoms around you have existed for billions of years -- and most originated in the flaming, gaseous core of a star. Dennis Wildfogel tells the captivating tale of these atoms' long journeys from the Big Bang to the molecules they form today.
The shape, contents and future of the universe are all intricately related. We know that it’s mostly flat; we know that it’s made up of baryonic matter (like stars and planets), but mostly dark matter and dark energy; and we know that it’s expanding constantly, so that all stars will eventually burn out into a cold nothingness. Renée Hlozek expands on the beauty of this dark ending.
Create and share a new lesson based on this one.
More from Out Of This World
Why the Moon turns red during a total lunar eclipse
lesson duration 03:09
Look Up! Jupiter is at its closest to Earth in 59 years
lesson duration 04:27
How the James Webb Space Telescope will unfold the universe - John C. Mather
lesson duration 08:48
Are the Northern Lights dangerous?
lesson duration 05:10