The fundamentals of space-time: Part 3 - Andrew Pontzen and Tom Whyntie
621,138 Views
3,868 Questions Answered
TEDEd Animation
Let’s Begin…
In the first two lessons of this series on space-time, we've dealt with
objects moving at constant speeds, with straight world lines, in
space-time. But what happens when you throw gravity into the mix? In
this third and final lesson, CERN scientists Andrew Pontzen and Tom
Whyntie explore what gravity means for space-time -- or rather, what
space-time means for gravity.
The expansion of the Universe fits perfectly into Einstein’s equations of gravity. But the expansion is speeding up, which is more surprising, because everything ought to be pulled back together. How can accelerated expansion be reconciled with Einstein’s theory of gravity? Why do some people think it points to a new, better theory beyond Einstein’s?
Sign in to answer questionAbout TED-Ed Animations
TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »
Meet The Creators
- Educator Tom Whyntie, Andrew Pontzen
- Director Mark Fisher, Patrick Semple, Daniel Spencer
- Narrator Andrew Pontzen, Tom Whyntie
