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Understanding the Universe: An Introduction to Astronomy, 2nd Edition

Get a comprehensive overview of the grandest of all subjects—the universe—in this brilliant and fascinating course taught by one of America's foremost astronomers. 

Watch First Lecture

96 Lectures

1
Image of A Grand Tour of the Cosmos
A Grand Tour of the Cosmos
0 of 33 min
2
Image of The Rainbow Connection
The Rainbow Connection
0 of 30 min
3
Image of Sunrise, Sunset
Sunrise, Sunset
0 of 31 min
4
Image of Bright Objects in the Night Sky
Bright Objects in the Night Sky
0 of 30 min
5
Image of Fainter Phenomena in the Night Sky
Fainter Phenomena in the Night Sky
0 of 30 min
6
Image of Our Sky through Binoculars and Telescopes
Our Sky through Binoculars and Telescopes
0 of 30 min
7
Image of The Celestial Sphere
The Celestial Sphere
0 of 32 min
8
Image of The Reason for the Seasons
The Reason for the Seasons
0 of 31 min
9
Image of Lunar Phases and Eerie Lunar Eclipses
Lunar Phases and Eerie Lunar Eclipses
0 of 30 min
10
Image of Glorious Total Solar Eclipses
Glorious Total Solar Eclipses
0 of 30 min
11
Image of More Eclipse Tales
More Eclipse Tales
0 of 31 min
12
Image of Early Studies of the Solar System
Early Studies of the Solar System
0 of 29 min
13
Image of The Geocentric Universe
The Geocentric Universe
0 of 30 min
14
Image of Galileo and the Copernican Revolution
Galileo and the Copernican Revolution
0 of 31 min
15
Image of Refinements to the Heliocentric Model
Refinements to the Heliocentric Model
0 of 30 min
16
Image of On the Shoulders of Giants
On the Shoulders of Giants
0 of 31 min
17
Image of Surveying Space and Time
Surveying Space and Time
0 of 30 min
18
Image of Scale Models of the Universe
Scale Models of the Universe
0 of 31 min
19
Image of Light—The Supreme Informant
Light—The Supreme Informant
0 of 31 min
20
Image of The Wave-Particle Duality of Light
The Wave-Particle Duality of Light
0 of 30 min
21
Image of The Colors of Stars
The Colors of Stars
0 of 31 min
22
Image of The Fingerprints of Atoms
The Fingerprints of Atoms
0 of 30 min
23
Image of Modern Telescopes
Modern Telescopes
0 of 30 min
24
Image of A Better Set of Eyes
A Better Set of Eyes
0 of 30 min
25
Image of Our Sun, the Nearest Star
Our Sun, the Nearest Star
0 of 30 min
26
Image of The Earth, Third Rock from the Sun
The Earth, Third Rock from the Sun
0 of 31 min
27
Image of Our Moon, Earth's Nearest Neighbor
Our Moon, Earth's Nearest Neighbor
0 of 30 min
28
Image of Mercury and Venus
Mercury and Venus
0 of 32 min
29
Image of Of Mars and Martians
Of Mars and Martians
0 of 30 min
30
Image of Jupiter and Its Amazing Moons
Jupiter and Its Amazing Moons
0 of 30 min
31
Image of Magnificent Saturn
Magnificent Saturn
0 of 30 min
32
Image of Uranus and Neptune, the Small Giants
Uranus and Neptune, the Small Giants
0 of 30 min
33
Image of Pluto and Its Cousins
Pluto and Its Cousins
0 of 29 min
34
Image of Asteroids and Dwarf Planets
Asteroids and Dwarf Planets
0 of 32 min
35
Image of Comets—Gorgeous Primordial Snowballs
Comets—Gorgeous Primordial Snowballs
0 of 31 min
36
Image of Catastrophic Collisions
Catastrophic Collisions
0 of 31 min
37
Image of The Formation of Planetary Systems
The Formation of Planetary Systems
0 of 32 min
38
Image of The Quest for Other Planetary Systems
The Quest for Other Planetary Systems
0 of 31 min
39
Image of Extra-Solar Planets Galore!
Extra-Solar Planets Galore!
0 of 31 min
40
Image of Life Beyond the Earth
Life Beyond the Earth
0 of 31 min
41
Image of The Search for Extraterrestrials
The Search for Extraterrestrials
0 of 31 min
42
Image of Special Relativity and Interstellar Travel
Special Relativity and Interstellar Travel
0 of 30 min
43
Image of Stars—Distant Suns
Stars—Distant Suns
0 of 31 min
44
Image of The Intrinsic Brightnesses of Stars
The Intrinsic Brightnesses of Stars
0 of 30 min
45
Image of The Diverse Sizes of Stars
The Diverse Sizes of Stars
0 of 30 min
46
Image of Binary Stars and Stellar Masses
Binary Stars and Stellar Masses
0 of 30 min
47
Image of Star Clusters, Ages, and Remote Distances
Star Clusters, Ages, and Remote Distances
0 of 30 min
48
Image of How Stars Shine—Nature's Nuclear Reactors
How Stars Shine—Nature's Nuclear Reactors
0 of 30 min
49
Image of Solar Neutrinos—Probes of the Sun's Core
Solar Neutrinos—Probes of the Sun's Core
0 of 31 min
50
Image of Brown Dwarfs and Free-Floating Planets
Brown Dwarfs and Free-Floating Planets
0 of 31 min
51
Image of Our Sun's Brilliant Future
Our Sun's Brilliant Future
0 of 30 min
52
Image of White Dwarfs and Nova Eruptions
White Dwarfs and Nova Eruptions
0 of 30 min
53
Image of Exploding Stars—Celestial Fireworks!
Exploding Stars—Celestial Fireworks!
0 of 30 min
54
Image of White Dwarf Supernovae—Stealing to Explode
White Dwarf Supernovae—Stealing to Explode
0 of 30 min
55
Image of Core-Collapse Supernovae—Gravity Wins
Core-Collapse Supernovae—Gravity Wins
0 of 31 min
56
Image of The Brightest Supernova in Nearly 400 Years
The Brightest Supernova in Nearly 400 Years
0 of 31 min
57
Image of The Corpses of Massive Stars
The Corpses of Massive Stars
0 of 30 min
58
Image of Einstein's General Theory of Relativity
Einstein's General Theory of Relativity
0 of 32 min
59
Image of Warping of Space and Time
Warping of Space and Time
0 of 31 min
60
Image of Black Holes—Abandon Hope, Ye Who Enter
Black Holes—Abandon Hope, Ye Who Enter
0 of 31 min
61
Image of The Quest for Black Holes
The Quest for Black Holes
0 of 31 min
62
Image of Imagining the Journey to a Black Hole
Imagining the Journey to a Black Hole
0 of 31 min
63
Image of Wormholes—Gateways to Other Universes?
Wormholes—Gateways to Other Universes?
0 of 32 min
64
Image of Quantum Physics and Black-Hole Evaporation
Quantum Physics and Black-Hole Evaporation
0 of 31 min
65
Image of Enigmatic Gamma-Ray Bursts
Enigmatic Gamma-Ray Bursts
0 of 30 min
66
Image of Birth Cries of Black Holes
Birth Cries of Black Holes
0 of 31 min
67
Image of Our Home—The Milky Way Galaxy
Our Home—The Milky Way Galaxy
0 of 30 min
68
Image of Structure of the Milky Way Galaxy
Structure of the Milky Way Galaxy
0 of 30 min
69
Image of Other Galaxies—
Other Galaxies—"Island Universes"
0 of 30 min
70
Image of The Dark Side of Matter
The Dark Side of Matter
0 of 30 min
71
Image of Cosmology—The Really Big Picture
Cosmology—The Really Big Picture
0 of 31 min
72
Image of Expansion of the Universe and the Big Bang
Expansion of the Universe and the Big Bang
0 of 31 min
73
Image of Searching for Distant Galaxies
Searching for Distant Galaxies
0 of 31 min
74
Image of The Evolution of Galaxies
The Evolution of Galaxies
0 of 31 min
75
Image of Active Galaxies and Quasars
Active Galaxies and Quasars
0 of 31 min
76
Image of Cosmic Powerhouses of the Distant Past
Cosmic Powerhouses of the Distant Past
0 of 31 min
77
Image of Supermassive Black Holes
Supermassive Black Holes
0 of 31 min
78
Image of Feeding the Monster
Feeding the Monster
0 of 31 min
79
Image of The Paradox of the Dark Night Sky
The Paradox of the Dark Night Sky
0 of 31 min
80
Image of The Age of the Universe
The Age of the Universe
0 of 31 min
81
Image of When Geometry Is Destiny
When Geometry Is Destiny
0 of 31 min
82
Image of The Mass Density of the Universe
The Mass Density of the Universe
0 of 31 min
83
Image of Einstein's Biggest Blunder?
Einstein's Biggest Blunder?
0 of 31 min
84
Image of The Afterglow of the Big Bang
The Afterglow of the Big Bang
0 of 31 min
85
Image of Ripples in the Cosmic Background Radiation
Ripples in the Cosmic Background Radiation
0 of 31 min
86
Image of The Stuff of the Cosmos
The Stuff of the Cosmos
0 of 31 min
87
Image of Dark Energy—Quantum Fluctuations?
Dark Energy—Quantum Fluctuations?
0 of 30 min
88
Image of Dark Energy—Quintessence?
Dark Energy—Quintessence?
0 of 31 min
89
Image of Grand Unification & Theories of Everything
Grand Unification & Theories of Everything
0 of 31 min
90
Image of Searching for Hidden Dimensions
Searching for Hidden Dimensions
0 of 31 min
91
Image of The Shape, Size, and Fate of the Universe
The Shape, Size, and Fate of the Universe
0 of 31 min
92
Image of In the Beginning
In the Beginning
0 of 32 min
93
Image of The Inflationary Universe
The Inflationary Universe
0 of 32 min
94
Image of The Ultimate Free Lunch?
The Ultimate Free Lunch?
0 of 31 min
95
Image of A Universe of Universes
A Universe of Universes
0 of 32 min
96
Image of Reflections on Life and the Cosmos
Reflections on Life and the Cosmos
0 of 38 min

Reviews

a********m
April 18, 2019

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a********m
February 16, 2019
BEST ever experience

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s********m
February 11, 2019
He really brings things to an understandable level. His love of the subjects helped me to love the subject even more. I love Dr. Filippenko's teaching style

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