Crash Course channel on YouTube

Crash Course videos are free to use in classes and by individuals. Funded via Patreon and featuring Hank Green on Anatomy and Physiology and Phil Plait (The Bad Astronomer) on Astronomy, the Crash Course series provides an up-to-date look at subjects from experts in their fields, and high-quality animation and production. STEAM topics covered include:

  • Anatomy & Physiology
  • Astronomy
  • Biology
  • Ecology
  • Chemistry
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Crash Course - Astronomy Series

Crash Course - Astronomy Series

This collection of YouTube videos is hosted by astronomer Phil Plait. It covers a vast range of astronomical topics at an introductory and approachable level.
Crash Course - Astronomy - 1: Introduction to Astronomy

Crash Course - Astronomy - 1: Introduction to Astronomy

This YouTube video defines astronomy, who studies it and how, and covers the basics of astronomical history.
Crash Course - Astronomy - 2: Naked Eye Observations

Crash Course - Astronomy - 2: Naked Eye Observations

This YouTube video describes what can be seen in the sky without aid of binoculars or telescopes.
Crash Course - Astronomy - 3: Cycles in the Sky

Crash Course - Astronomy - 3: Cycles in the Sky

This YouTube video describes repeating patterns of changes in the sky.
Crash Course - Astronomy - 4: Moon Phases

Crash Course - Astronomy - 4: Moon Phases

This YouTube video explains why the moon has phases and what their names are.
Crash Course - Astronomy - 5: Eclipses

Crash Course - Astronomy - 5: Eclipses

This YouTube video describes solar and lunar eclipses, their causes, and their variations.
Crash Course - Astronomy - 6: Telescopes

Crash Course - Astronomy - 6: Telescopes

This YouTube video explains how telescopes work, and describes various types of telescopes.
Crash Course - Astronomy - 7: Gravity

Crash Course - Astronomy - 7: Gravity

This YouTube video describes the universal phenomenon of gravity.
Crash Course - Astronomy - 8: Tides

Crash Course - Astronomy - 8: Tides

This YouTube video explains the phenomena of tides and tidal forces.
Crash Course - Astronomy - 9: Introduction to the Solar System

Crash Course - Astronomy - 9: Introduction to the Solar System

This YouTube video introduces the objects in the solar system, and describes their formation.
Crash Course - Astronomy - 10: The Sun

Crash Course - Astronomy - 10: The Sun

This YouTube video takes a detailed look at our closest star.
Crash Course - Astronomy - 11: The Earth

Crash Course - Astronomy - 11: The Earth

This YouTube video takes a detailed look at our own planet, the Earth.
Crash Course - Astronomy - 12: The Moon

Crash Course - Astronomy - 12: The Moon

This YouTube video takes a detailed look at our natural satellite, the Moon.
Crash Course - Astronomy - 13: Mercury

Crash Course - Astronomy - 13: Mercury

This YouTube video takes a detailed look at the nearest planet to the Sun, Mercury.
Crash Course - Astronomy - 14: Venus

Crash Course - Astronomy - 14: Venus

This YouTube video takes a detailed look at the second rock from the Sun, Venus.
Crash Course - Astronomy - 15: Mars

Crash Course - Astronomy - 15: Mars

This YouTube video takes a detailed look at the Red Planet, Mars.
Crash Course - Astronomy - 16: Jupiter

Crash Course - Astronomy - 16: Jupiter

This YouTube video takes a detailed look at the king of planets, Jupiter.
Crash Course - Astronomy - 17: Jupiter's Moons

Crash Course - Astronomy - 17: Jupiter's Moons

This YouTube video takes a detailed look at the many moons of Jupiter.
Crash Course - Astronomy - 18: Saturn

Crash Course - Astronomy - 18: Saturn

This YouTube video takes a detailed look at the ringed planet, Saturn.
Crash Course - Astronomy - 19: Uranus & Neptune

Crash Course - Astronomy - 19: Uranus & Neptune

This YouTube video takes a detailed look at the two outer giants planets, Uranus and Neptune.
Crash Course - Astronomy - 20: Asteroids

Crash Course - Astronomy - 20: Asteroids

This YouTube video takes a detailed look at the asteroid belt between Mars and Jupiter.
Crash Course - Astronomy - 21: Comets

Crash Course - Astronomy - 21: Comets

This YouTube video takes a detailed look at the icy bodies known as comets.
Crash Course - Astronomy - 22: Oort Cloud and Outer Solar System

Crash Course - Astronomy - 22: Oort Cloud and Outer Solar System

This YouTube video takes a detailed look at the distant, and still hypothetical Oort cloud.
Crash Course - Astronomy - 23: Meteors

Crash Course - Astronomy - 23: Meteors

This YouTube video takes a detailed look at meteors, objects entering Earth's atmosphere.
Crash Course - Astronomy - 24: Light

Crash Course - Astronomy - 24: Light

This YouTube video takes a detailed look at one of the most basic phenomenon of nature, light.
Crash Course - Astronomy - 25: Distances

Crash Course - Astronomy - 25: Distances

This YouTube video discusses how astronomers measure distances.
Crash Course - Astronomy - 26: Stars

Crash Course - Astronomy - 26: Stars

This YouTube video introduces the variety of stars in the visible universe and how they are categorized by astronomers.
Crash Course - Astronomy - 27: Exoplanets

Crash Course - Astronomy - 27: Exoplanets

This YouTube video examines how astronomers find planets outside our solar system, and describes some of the planets found so far.
Crash Course - Astronomy - 28: Brown Dwarfs

Crash Course - Astronomy - 28: Brown Dwarfs

This YouTube video takes a detailed look at brown dwarfs, astronomical bodies barely too small to fuse atoms in their cores.
Crash Course - Astronomy - 29: Low Mass Stars

Crash Course - Astronomy - 29: Low Mass Stars

This YouTube video discusses the life cycles of the longest-lasting stars, those with low mass.
Crash Course - Astronomy - 30: White Dwarfs & Planetary Nebulae

Crash Course - Astronomy - 30: White Dwarfs & Planetary Nebulae

This YouTube video describes the formation and fate of white dwarfs, and how planetary nebulae are formed.
Crash Course - Astronomy - 31: High Mass Stars

Crash Course - Astronomy - 31: High Mass Stars

This YouTube video takes a detailed look the lifecycle of high mass stars.
Crash Course - Astronomy - 32: Neutron Stars

Crash Course - Astronomy - 32: Neutron Stars

This YouTube video describes the formation and phenomena surrounding neutron stars.
Crash Course - Astronomy - 33: Black Holes

Crash Course - Astronomy - 33: Black Holes

This YouTube video describes the formation and characteristics of black holes.
Crash Course - Astronomy - 34: Binary and Multiple Stars

Crash Course - Astronomy - 34: Binary and Multiple Stars

This YouTube video describes systems with two or more stars.
Crash Course - Astronomy - 35: Star Clusters

Crash Course - Astronomy - 35: Star Clusters

This YouTube video takes a detailed look at star clusters, collections of large numbers of stars formed together.
Crash Course - Astronomy - 36: Nebulae

Crash Course - Astronomy - 36: Nebulae

This YouTube video examines astronomical nebulae, enormous clouds of dust and gas.
Crash Course - Astronomy - 37: The Milky Way

Crash Course - Astronomy - 37: The Milky Way

This YouTube video takes a detailed look at our own galaxy, the Milky Way.
Crash Course - Astronomy - 38: Galaxies, Part 1

Crash Course - Astronomy - 38: Galaxies, Part 1

This YouTube video covers the history of galactic discovery, and the shapes of galaxies.
Crash Course - Astronomy - 39: Galaxies, Part 2

Crash Course - Astronomy - 39: Galaxies, Part 2

This YouTube video covers active galaxies, galactic black holes, and galaxy clusters.
Crash Course - Astronomy - 40: Gamma-Ray Bursts

Crash Course - Astronomy - 40: Gamma-Ray Bursts

This YouTube video covers the discovery of gamma-rays, and how they are created by astronomical objects.
Crash Course - Astronomy - 41: Dark Matter

Crash Course - Astronomy - 41: Dark Matter

This YouTube video covers the history of and theories behind dark matter.
Crash Course - Astronomy - 42: The Big Bang, Cosmology part 1

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

This YouTube video introduces cosmology with a look at the Big Bang.
Crash Course - Astronomy - 43: Dark Energy, Cosmology part 2

Crash Course - Astronomy - 43: Dark Energy, Cosmology part 2

This YouTube video describes what we know and don't know about Dark Energy.
Crash Course - Astronomy - 44: A Brief History of the Universe

Crash Course - Astronomy - 44: A Brief History of the Universe

This YouTube video covers the first 20 minutes of the universe.
Crash Course - Astronomy - 45: Deep Time

Crash Course - Astronomy - 45: Deep Time

This YouTube video covers the far future of the universe, including its eventual demise.
Crash Course - Astronomy - 46: Everything, The Universe, And Life

Crash Course - Astronomy - 46: Everything, The Universe, And Life

This YouTube video covers exoplanets and the possibility of life elsewhere in the universe.