Ranked #1
Lecture 32: Space, Time, & Gravity: General Relativity
Lecture 32: Space, Time, & Gravity: General Relativity
What is gravity? Newton left that question unanswered when he formulatedhis inverse square law of the gravitational for... Read more
21 Feb 2006
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Ranked #2
Lecture 20: Black Holes
Lecture 20: Black Holes
What happens if even Neutron Degeneracy pressure is insufficient tohalt the collapse of gravity? In that case, the obje... Read more
1 Feb 2006
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Ranked #3
Lecture 41: Dark Matter & Dark Energy
Lecture 41: Dark Matter & Dark Energy
We are not made of the same matter as most of the Universe! Thissurprising conclusion, that the ordinary matter we are ... Read more
7 Mar 2006
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Ranked #4
Lecture 31: A Tale of Two World Views: Special Relativity
Lecture 31: A Tale of Two World Views: Special Relativity
What are space and time? To begin our exploration of the evolvingUniverse, we must first understand what we mean by spa... Read more
20 Feb 2006
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Ranked #5
Lecture 18: Supernovae
Lecture 18: Supernovae
Once a massive star builds a massive Iron/Nickel core at the end ofthe Silicon Burning day, it is doomed. A catastrophi... Read more
30 Jan 2006
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Ranked #6
Lecture 19: Extreme Stars: White Dwarfs & Neutron Stars
Lecture 19: Extreme Stars: White Dwarfs & Neutron Stars
What happens to the cores left behind at the end of a star's life?This lecture introduces these stellar remnants: White ... Read more
31 Jan 2006
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Ranked #7
Lecture 33: Einstein's Universe
Lecture 33: Einstein's Universe
What are the implications of Relativity for the Universe? This lectureintroduces the Cosmological Principle, which stat... Read more
22 Feb 2006
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Ranked #8
Lecture 42: Time Travel
Lecture 42: Time Travel
Can we travel through time? This is not a frivilous, science-fictionkind of question. Certain restricted kinds of time... Read more
8 Mar 2006
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Ranked #9
Lecture 11: The Internal Structure of Stars
Lecture 11: The Internal Structure of Stars
What are the physical laws that determine the internal structureof stars? We first introduce the Mass-Luminosity Relati... Read more
18 Jan 2006
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Ranked #10
Lecture 36: The Big Bang
Lecture 36: The Big Bang
The Universe today is old, cold, low-density, and expanding. If we runthe expansion backwards, we will eventually find ... Read more
27 Feb 2006
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Ranked #11
Lecture 17: The Evolution of High-Mass Stars
Lecture 17: The Evolution of High-Mass Stars
What happens when a high-mass (more than 4 solar masses) Main Sequencestars runs out of Hydrogen in its core. At first ... Read more
27 Jan 2006
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Ranked #12
Lecture 30: Active Galaxies & Quasars
Lecture 30: Active Galaxies & Quasars
What are Active Galaxies and Quasars? We have good reason to think that buried deep in the hearts of nearly every (?) b... Read more
16 Feb 2006
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Ranked #13
Lecture 23: The Milky Way
Lecture 23: The Milky Way
What is the Milky Way, and what is our place within it? This lectureintroduces the Milky Way, the bright band of light ... Read more
7 Feb 2006
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Ranked #14
Lecture 14: Star Formation
Lecture 14: Star Formation
How do stars form? The Sun is old and in Hydrostatic andThermal equilibrium. How did it get that way? This lecturepre... Read more
24 Jan 2006
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Ranked #15
Lecture 07: Stellar Brightness
Lecture 07: Stellar Brightness
How do we quantify stellar brightness? This lecture introducesthe inverse square-law of apparent brightness, the relati... Read more
11 Jan 2006
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Ranked #16
Lecture 38: The First Three Minutes
Lecture 38: The First Three Minutes
What was the Universe like from the earliest phases immediately afterthe Big Bang to the present day? This lecture revi... Read more
1 Mar 2006
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Ranked #17
Lecture 39: The Fate of the Universe
Lecture 39: The Fate of the Universe
What is the ultimate fate of the Universe? The ultimate fate ofthe Big Bang is either expansion to a maximum size follo... Read more
2 Mar 2006
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Ranked #18
Lecture 22: The Cosmic Distance Problem
Lecture 22: The Cosmic Distance Problem
How do we measure distances to astronomical objects that are too faraway to use Trigonometric Parallaxes? This first le... Read more
6 Feb 2006
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Ranked #19
Lecture 16: The Evolution of Low-Mass Stars
Lecture 16: The Evolution of Low-Mass Stars
What happens to a low-mass star (less than 4 solar masses) whenit runs out of core Hydrogen and must leave the Main Sequ... Read more
26 Jan 2006
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Ranked #20
Lecture 08: Stellar Masses & Radii
Lecture 08: Stellar Masses & Radii
How do we measure the masses and radii of stars? This lecturedescribes the three basic types of binary stars, and how e... Read more
12 Jan 2006
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