Planetary holy grail

A new rocky planet, similar to earth, orbiting a star called Gliese 581, has been discovered. This new planet is in the ‘habitable ...

Air Date: April 28, 2009

Inner and outer planets

Earth is percieved as a rocky planet, what are other planets like? Did you know Mars is cold and that outer planets are really gigant ...

Air Date: April 13, 2009

Year of astronomy

It’s the international year of astronomy and Astronomers all over the world are recognizing Galileo’s first use of the te ...

Air Date: March 30, 2009


A star is born

Conditions in space are so very different than that of earth. When you think of hot, you think red, right? Not so in space. A hot star is ...

Air Date: February 23, 2009


A new planet

Another piece of the cosmic puzzle is discovered. A new planet less than twice the size of earth orbiting a sun like star. A rocky planet ...

Air Date: February 9, 2009


The night sky

When you look at the night sky, do you know how many stars or other points of light can be seen by the naked eye? How did ancient observe ...

Air Date: February 2, 2009


The universe

“Back-to-basics” month continues on SkyTalk as Derrick Pitts and WHYY’s Dave Heller examine how we see the uni ...

Air Date: January 26, 2009


How the sky appears to us

WHYY-FM’s Dave Heller and astronomer Derrick Pitts celebrate Skytalk’s 18th season on the air by doing what they do best̷ ...

Air Date: January 12, 2009