StarDate

Shining Through


Listen Later

The glare of the full Moon overpowers most of the stars around it. Only the brightest of stars shine through. And that’s what we have tonight. Three bright stars form a wide triangle, with the Moon along one side of it.

The star that appears closest to the Moon is Pollux, the brighter of the twins of Gemini. It’s above the Moon at nightfall. It’s a stellar giant — it’s much bigger and brighter than the Sun. It’s well past the prime of life, so it’s puffed up to giant proportions. And it’s only about 34 light-years away. The combination of size and distance makes it bright and easy to spot.

The next-closest companion star is Regulus, the leading light of Leo, the lion. It climbs into good view below the Moon by about 8 o’clock.

Regulus is a binary — two stars locked in a tight orbit around each other. The main star is much brighter and more massive than the Sun. Its companion is a white dwarf — the small, faint, dead core of a star. The system is about 80 light-years away.

The final companion is Procyon, which is well to the right of the Moon. It’s the brightest star of the little dog, so it’s known as the Little Dog Star. It, too, is a binary. And like Regulus, it consists of a star in the prime of life paired with a white dwarf. The system is among our closest neighbors — only about 11 light-years away.

Look for this trio of bright stars shining through the brilliant moonlight all night long.

Script by Damond Benningfield

Support McDonald Observatory

...more
View all episodesView all episodes
Download on the App Store

StarDateBy Billy Henry

  • 4.6
  • 4.6
  • 4.6
  • 4.6
  • 4.6

4.6

251 ratings


More shows like StarDate

View all
Radiolab by WNYC Studios

Radiolab

43,968 Listeners

The 365 Days of Astronomy by 365DaysOfAstronomy.org

The 365 Days of Astronomy

351 Listeners

Planetary Radio: Space Exploration, Astronomy and Science by The Planetary Society

Planetary Radio: Space Exploration, Astronomy and Science

1,359 Listeners

SpaceTime: Your Guide to Space & Astronomy by Stuart Gary

SpaceTime: Your Guide to Space & Astronomy

307 Listeners

BirdNote Daily by BirdNote

BirdNote Daily

1,223 Listeners

Ask a Spaceman! by Paul M. Sutter

Ask a Spaceman!

831 Listeners

Astronomy Cast by Fraser Cain and Dr. Pamela Gay

Astronomy Cast

2,872 Listeners

Universe Today Podcast by Fraser Cain

Universe Today Podcast

559 Listeners

Space Nuts: Astronomy Insights & Cosmic Discoveries by Professor Fred Watson and Andrew Dunkley

Space Nuts: Astronomy Insights & Cosmic Discoveries

228 Listeners

Science Friday by Science Friday and WNYC Studios

Science Friday

6,329 Listeners

Short Wave by NPR

Short Wave

6,422 Listeners

The Supermassive Podcast by The Royal Astronomical Society

The Supermassive Podcast

316 Listeners

NASA's Curious Universe by National Aeronautics and Space Administration (NASA)

NASA's Curious Universe

852 Listeners

Why This Universe? by Dan Hooper, Shalma Wegsman

Why This Universe?

394 Listeners

Crash Course Pods: The Universe by Crash Course Pods, Complexly

Crash Course Pods: The Universe

510 Listeners