Ranked #1
Lecture 41: Interstellar Travel and Colonization
Lecture 41: Interstellar Travel and Colonization
If we ever detect life elsewhere, how will we go visit? This lectureconsiders the challenges of interstellar travel and... Read more
25 Nov 2009
•
45mins
Ranked #2
Lecture 2: Astronomical Numbers
Lecture 2: Astronomical Numbers
An introduction and review of the basic notation and physical units we will beusing throughout this course. In particul... Read more
24 Sep 2009
•
43mins
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Ranked #3
Lecture 3: Imagining Other Worlds
Lecture 3: Imagining Other Worlds
What is the cultural history of our imaginings of other worlds and their possible inhabitants? I will draw examples from... Read more
25 Sep 2009
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40mins
Ranked #4
Lecture 40: SETI - The Search for Extra-Terrestrial Intelligence
Lecture 40: SETI - The Search for Extra-Terrestrial Intelligence
Is anybody out there? This lecture reviews the ideas behind SETI, theSearch for Extra-Terrestrial Intelligence, an effo... Read more
24 Nov 2009
•
46mins
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Ranked #5
Lecture 19: The Origin of Life on Earth
Lecture 19: The Origin of Life on Earth
How did life arise from non-life? Frankly, we don't know, but currentexperimental work is aimed at trying to understand... Read more
20 Oct 2009
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46mins
Ranked #6
Lecture 20: The History of Life on Earth
Lecture 20: The History of Life on Earth
In this lecture we step back and look at the history of life on Earthfrom the first signs of life at start of the Archae... Read more
21 Oct 2009
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47mins
Ranked #7
Lecture 39: The Drake Equation
Lecture 39: The Drake Equation
How many intelligent, communicating civilizations live in our Galaxy?We have no idea. One way to approach the question ... Read more
23 Nov 2009
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45mins
Ranked #8
Lecture 8: The Cosmological Revolution - The Depths of Space and Time
Lecture 8: The Cosmological Revolution - The Depths of Space and Time
Cosmology is the study of the entire Universe as a physical system. Thepast century has witnessed a revolution in cosmo... Read more
2 Oct 2009
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46mins
Ranked #9
Lecture 18: The First Living Things on Earth
Lecture 18: The First Living Things on Earth
What are the first recognizable forms of life that we find in thegeological record? How far back can we go in geologica... Read more
19 Oct 2009
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46mins
Ranked #10
Lecture 21: Impacts and Extinction
Lecture 21: Impacts and Extinction
We end our exploration of life on the Earth with a look at death in thefossil record. This lecture looks at the role as... Read more
22 Oct 2009
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46mins
Ranked #11
Lecture 4: The Copernican Revolution
Lecture 4: The Copernican Revolution
Modern science was borne of an effort over many centuries to understandthe motions of celestial bodies. The Copernican ... Read more
28 Sep 2009
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43mins
Ranked #12
Lecture 6: The Geological Revolution - Deep Time and the Age of the Earth
Lecture 6: The Geological Revolution - Deep Time and the Age of the Earth
The geological revolution revealed that the Earth is of great antiquityand yet has a history we can read in the land. W... Read more
30 Sep 2009
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46mins
Ranked #13
Lecture 5: The Chemical Revolution and the Nature of Matter
Lecture 5: The Chemical Revolution and the Nature of Matter
What is the nature of matter, and how did we come to understand thechemical elements and atomic structure? This lecture... Read more
29 Sep 2009
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45mins
Ranked #14
Lecture 11: The History of the Earth
Lecture 11: The History of the Earth
How have we pieced together the geological history of the Earth?This lecture reviews the different types of rocks and th... Read more
7 Oct 2009
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42mins
Ranked #15
Lecture 35: The Solar Neighborhood
Lecture 35: The Solar Neighborhood
What stars are near the Sun? Now that we have some idea of what we arelooking for - rocky planets in the habitable zone... Read more
16 Nov 2009
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46mins
Ranked #16
Lecture 37: Strange New Worlds
Lecture 37: Strange New Worlds
What are the properties of the 400+ exoplanets we have discovered sofar? This lecture reviews the properties of exoplan... Read more
18 Nov 2009
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46mins
Ranked #17
Lecture 33: The Deaths of Stars
Lecture 33: The Deaths of Stars
What happens to a star when it runs out of hydrogen in its core? Thislecture describes the post main-sequence evolution... Read more
12 Nov 2009
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47mins
Ranked #18
Lecture 38: The Pale Blue Dot - Seeking Other Earths
Lecture 38: The Pale Blue Dot - Seeking Other Earths
Are there other Earths out there? Do they have life on them? Thislecture looks at the search for ExoEarths - Earth-siz... Read more
19 Nov 2009
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44mins
Ranked #19
Lecture 32: The Lives of Stars
Lecture 32: The Lives of Stars
Why do stars shine? How long do they shine? This lecture describes thephysics of stars on the main sequence, describes... Read more
10 Nov 2009
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46mins
Ranked #20
Lecture 27: Is There Life on Mars?
Lecture 27: Is There Life on Mars?
Is there life on Mars? We begin with a brief historical survey of the idea of inhabitable Mars, from Herschel to Lowell... Read more
2 Nov 2009
•
47mins
