00:01
So we want to know five ways to study space without going there.
00:15
And the first and most obvious one that we use all the time is by using telescopes.
00:31
So telescopes help us see physical phenomena that happen in space.
00:38
We can see distant galaxies, we can see black holes, we can see things even in our own like the moon or the other planets.
00:47
So telescopes are an obvious way that humans for thousands of years now have been observing the night sky with.
00:57
We can also send unmanned probes into space.
01:13
So this would be something like either voyager or the discovery project on mars.
01:19
We can send robots to go places that we can't.
01:22
And take measurements that we might not be able to physically.
01:28
A third way that we can study space is recreate space like environments on earth.
01:48
And we can do that with things like vacuum chambers, where we evacuate all air...