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36

Catastrophic Collisions

Lecture no. 36 from the course: Understanding the Universe: An Introduction to Astronomy, 2nd Edition

Catastrophic Collisions

Taught by Professor Alex Filippenko | 31 min | Categories: The Great Courses Plus Online Science Course

Comets and asteroids have struck Earth throughout its history. One such collision 65 million years ago probably caused the extinction of the dinosaurs. Astronomers now search for asteroids that could be a potential threat to Earth.

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

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November 13, 2017

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