The Andromeda Galaxy, a spiral galaxy in the constellation of Andromeda Messier 31 M31.
Going in Circles
Going in Circles

Skytalk is hosted by WHYY's Dave Heller. Each week he discusses the latest news in astronomy with Dr. Derrick H. Pitts of the Franklin Institute.

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The Andromeda Galaxy, a spiral galaxy in the constellation of Andromeda Messier 31 M31.

Going in Circles

This week, astronomers are studying a pair of stars that rotate around their common point once every 3 hours. The stars are buried ...

Air Date: November 10, 2018

Listen 05:25

Fall Back

Enjoy an earlier sunrise starting Sunday morning, when our area reverts to Eastern Standard Time. The earlier sunsets affords oppor ...

Air Date: November 2, 2018

Listen 06:38
Image: NASA

Sun Day

Our sun, some 865,000 miles in diameter, rotates once every 30-35 days or so; fairly normal for a star like ours. Contrast that wit ...

Air Date: October 29, 2018

Listen 06:12

Shooting Stars

Buried in the data from European Space Agency’s Gaia Survey satellite, astronomers from Leiden University in the Netherlands discov ...

Air Date: October 16, 2018

Listen 04:31
Image: Caltech/R. Hurt (IPAC)

The Goblin

Scientists who confirmed the existence of 2015 TG387 out beyond the Kuiper Belt believe its orbit offers the best evidence of the existe ...

Air Date: October 9, 2018

Listen 06:02
The Milky Way's Galactic Center in the night sky above the Paranal Observatory (the laser creates a guide-star for the telescope). ESO/Y. Beletsky

Galactic Two-Step

Our Milky Way is thought to have originally formed shortly after the birth of the universe, 13.5 billion years ago. Built from the first ...

Air Date: September 3, 2018

Listen 05:13
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