August 26, 2009
Dr. Varoujan Gorjian explains the mind-boggling expansion of the Universe.
February 5, 2009
Visit the W-5 star-forming region with 'Ask an Astronomer'!
December 22, 2008
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.
October 23, 2008
In this 'Ask an Astronomer' episode, Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum.
August 25, 2008
This 'Ask an Astronomer' special looks at some of the biggest discoveries from NASA's Spitzer Space Telescope over the last five years.
July 1, 2008
Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet in this 'Ask an Astronomer' video.
May 8, 2008
Dr. Carolyn Brinkworth addresses a famous science fiction scenario in this 'Ask an Astronomer' video.
April 10, 2008
Dr. Varoujan Gorjian gives us the answer to this 'Ask an Astronomer' question.
March 13, 2008
Dr. Michelle Thaller answers this question for 'Ask an Astronomer.'
February 13, 2008
Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks.
December 18, 2007
Dr. Michelle Thaller explains infrared light in this older video, produced by NASA's Spitzer Space Telescope (then known as the Space Infrared Telescope Facility) before it launched.
November 5, 2007
In this animated 'Ask an Astronomer' special, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe.
September 14, 2007
Dr. Varoujan Gorjian takes us inside galactic collisions in this 'Ask an Astronomer' video.
July 27, 2007
Dr. Michelle Thaller explains that the answer isn't as simple as you might think!
February 12, 2007
Dr. Robert Hurt explains why Pluto got... well... plutoed.
August 24, 2006
If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains.
May 24, 2006
'Ask an Astronomer' uses an astronomer, a flying saucer, and a cow to help explain this difficult astronomical concept in simple terms.
December 9, 2005
The answer to this 'Ask an Astronomer' question may surprise you!
October 25, 2005
'Ask an Astronomer' explains the morphology of one of the most common types of galaxy.
October 14, 2005
'Ask an Astronomer' explains one of the strangest objects in outer space.
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