Ask an Astronomer

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Episodes

Date Title & Description Contributors
2009-08-26

  Where Is the Center of the Universe?

Dr. Varoujan Gorjian explains the mind-boggling expansion of the Universe.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2009-02-05

  W-5 Star-Forming Region

Visit the W-5 star-forming region with 'Ask an Astronomer'!
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-12-22

  Why Is the Sky Blue?

In this 'Ask an Astronomer' episode, Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with finding life on distant planets.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-10-23

  What's Between the Stars?

In this 'Ask an Astronomer' episode, Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-08-25

  Spitzer's Fifth Anniversary

This 'Ask an Astronomer' special looks at some of the biggest discoveries from NASA's Spitzer Space Telescope over the last five years.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-07-01

  What Will Happen to the Earth When the Sun Dies?

Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet in this 'Ask an Astronomer' video.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-05-08

  Can a Planet Have Two Suns?

Dr. Carolyn Brinkworth addresses a famous science fiction scenario in this 'Ask an Astronomer' video.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-04-10

  Can a Galaxy Die?

Dr. Varoujan Gorjian gives us the answer to this 'Ask an Astronomer' question.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-03-13

  Why Aren't There Any Green Stars?

Dr. Michelle Thaller answers this question for 'Ask an Astronomer.'
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author
2008-02-13

  How Do You Discover an Asteroid?

Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks.
  NASA's Spitzer Science Center and Infrared Processing and Analysis Center author