StarDate

Spanning the Galaxy


Listen Later

The center of the Milky Way Galaxy is in good view as night falls this evening. And as the night ends, at dawn tomorrow, the galactic “anticenter” is in view – the point directly opposite the center.

The Milky Way is our home galaxy. It’s a disk about a hundred-thousand light-years wide. Earth is about half-way between the center of the disk and its rim. In the night sky, the disk forms the faint path called the Milky Way. But you need nice dark skies to see it.

The center is in the constellation Sagittarius. Its most prominent stars form the outline of a teapot. Puffs of “steam” appear to rise from the spout of the teapot. The center of the galaxy is immersed in the steam.

We can’t see the center because intervening clouds of dust absorb its light. But if we could see it, it would be impressive. Billions of stars are jammed together – far more tightly packed than in our region of the galaxy.

The anti-center is in Taurus, which is low in the east at dawn. That point is marked by the star Elnath. It’s the bull’s second-brightest star, at the tip of one of his horns. And it’s easy to spot tomorrow because it’s quite close to the crescent Moon.

Except for Elnath, there’s not much to see in that direction. We’re looking toward the galaxy’s thinly settled outer precincts, with intergalactic space beyond. Enjoy the panorama of the Milky Way – our galactic home – all night long.

Script by Damond Benningfield

...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

43,898 Listeners

The 365 Days of Astronomy by 365DaysOfAstronomy.org

The 365 Days of Astronomy

348 Listeners

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

Planetary Radio: Space Exploration, Astronomy and Science

1,353 Listeners

SpaceTime with Stuart Gary by Stuart Gary

SpaceTime with Stuart Gary

321 Listeners

BirdNote Daily by BirdNote

BirdNote Daily

1,255 Listeners

Ask a Spaceman! by Paul M. Sutter

Ask a Spaceman!

836 Listeners

Astronomy Cast by Fraser Cain and Dr. Pamela Gay

Astronomy Cast

2,882 Listeners

Universe Today Podcast by Fraser Cain

Universe Today Podcast

569 Listeners

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

Space Nuts: Astronomy Insights & Cosmic Discoveries

234 Listeners

Science Friday by Science Friday and WNYC Studios

Science Friday

6,435 Listeners

Short Wave by NPR

Short Wave

6,564 Listeners

The Supermassive Podcast by The Royal Astronomical Society

The Supermassive Podcast

329 Listeners

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

NASA's Curious Universe

888 Listeners

Why This Universe? by Dan Hooper, Shalma Wegsman

Why This Universe?

381 Listeners

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

Crash Course Pods: The Universe

572 Listeners