Cover image of Astronomy 162 - Stars, Galaxies, & the Universe

Astronomy 162 - Stars, Galaxies, & the Universe

Astronomy 162, Stars, Galaxies, and the Universe, is part 2 of a2-quarter introductory Astronomy for non-science majors taught at TheOhio State University. This podcast presents lecture audio fromPro... Read more

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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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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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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

Ranked #4

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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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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

Ranked #6

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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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