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Crash Course Astronomy

The Big Bang, Cosmology part 1: Crash Course Astronomy #42

Season 1 Episode 42

Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a bang.

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Stellar mass black holes form when a very massive star dies, and its core collapses.
Neutron Stars: Crash Course Astronomy #32
12:42
In the aftermath of a some stars we find a weird little object known as a neutron star.
High Mass Stars: Crash Course Astronomy #31
12:02
Massive stars fuse heavier elements in their cores than lower mass stars.
White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30
11:09
What comes next after the death of a low mass star? A white dwarf.
Low Mass Stars: Crash Course Astronomy #29
12:02
Today we are talking about the life -- and death -- of stars.
Brown Dwarfs: Crash Course Astronomy #28
11:05
Brown dwarfs have a mass that places them between giant planets and small stars.
Exoplanets: Crash Course Astronomy #27
11:49
There are many other planets outside of our own solar system, but finding them is tricky.
Stars: Crash Course Astronomy #26
10:40
Phil explains stars and how they can be categorized using their spectra.
Distances: Crash Course Astronomy #25
11:20
How do astronomers make sense out of the vastness of space?
Light: Crash Course Astronomy #24
10:33
In order to understand more of universe, we need to talk a little bit about light.
Meteors: Crash Course Astronomy #23
11:21
What the difference between a meteor, meteorite, and meteoroid?
The Oort Cloud: Crash Course Astronomy #22
11:40
WeÕre heading to the outskirts of the solar system.
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