StarDate

Moon and Companions


Listen Later

The crescent Moon has a couple of colorful companions the next couple of mornings: the planet Mars and the star Antares. Both have a distinctly orange hue. Mars’s color is caused by reddish dust on its surface. Antares is colored by the temperature of the gas that makes up its surface.

There’s a bit of orange on the Moon as well — the residue of volcanic eruptions. The crew of the final Apollo mission found a patch of orange soil, which contained many orange glass beads. Scientists have seen similar beads mixed in with the soil from other locations. A few of the beads even contain water — suggesting there’s a lot of water mixed in with the lunar dirt.

Such color is a rarity on the Moon, though. Most of the surface is dark grey. It consists of plains of volcanic rock and jumbled highlands, all topped by the sticky, powdery dirt.

Neither pictures nor descriptions by astronauts depict much of any other color. Perhaps the most colorful bits of the Moon, in fact, are those that came from Earth. The Apollo landers were coated in gold foil. And astronauts set up American flags at all six of their landing sites. But exposure to unfiltered sunlight could have washed away much of that color — leaving the Moon as colorless as when astronauts arrived there.

Look for the Moon and its companions before sunrise. Mars is below the Moon tomorrow, with brighter Antares farther to the lower right. Both will be to the upper right of the Moon on Tuesday.

 

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
Science Friday by Science Friday and WNYC Studios

Science Friday

6,133 Listeners

BirdNote Daily by BirdNote

BirdNote Daily

1,190 Listeners

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

Planetary Radio: Space Exploration, Astronomy and Science

1,344 Listeners

Radiolab by WNYC Studios

Radiolab

43,967 Listeners

Astronomy Cast by Fraser Cain and Dr. Pamela Gay

Astronomy Cast

2,866 Listeners

The 365 Days of Astronomy by 365DaysOfAstronomy.org

The 365 Days of Astronomy

336 Listeners

Universe Today Podcast by Fraser Cain

Universe Today Podcast

544 Listeners

Ask a Spaceman! by Paul M. Sutter

Ask a Spaceman!

804 Listeners

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

Space Nuts: Astronomy Insights & Cosmic Discoveries

221 Listeners

SpaceTime: Your Guide to Space & Astronomy by Stuart Gary

SpaceTime: Your Guide to Space & Astronomy

320 Listeners

Short Wave by NPR

Short Wave

6,259 Listeners

The Supermassive Podcast by The Royal Astronomical Society

The Supermassive Podcast

287 Listeners

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

NASA's Curious Universe

851 Listeners

Why This Universe? by Dan Hooper, Shalma Wegsman

Why This Universe?

363 Listeners

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

Crash Course Pods: The Universe

505 Listeners