Travelers In The Night

Series produced by Albert Grauer

Series image
Image by: NASA 

Travelers In The Night is your unique source of insider Information from the Asteroid Hunting and Space Communities.
The music is "Eternity" by John Lyell.

The PRX Series “Travelers In The Night” has more than 5,650 PRX free purchases as well as more than 786,000 downloads on the internet. It has been aired on 57 radio stations.


It features an engaging and informative series of two minute, factual episodes about asteroids, comets, spacecraft, and other objects in space.

The pieces are "evergreen" in that they are current but not dated.

The Travelers In The Night Pieces are written and produced by a member of the Catalina Sky Survey Team at the University of Arizona.

The Catalina Sky Survey has discovered nearly half of the Earth approaching objects known to exist.


765 Pieces

Order by: Newest First | Oldest First
646-Young Martian Volcanoes
From: Albert Grauer
Series: Travelers In The Night
Caption: Recent explosive volcanic deposit around a fissure of the Cerberus Fossae system. , Credit: NASA/JPL/MSSS/The Murray Lab
Relatively recent volcanic activity observed on Mars suggests that where subsurface martian magma and frozen water meet is where microbial life cou...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, RADIOLEX, KRWG and more


  • Added: Jun 13, 2021
  • Length: 02:00
  • Purchases: 9
645-Shrinking Stratosphere
From: Albert Grauer
Series: Travelers In The Night
Caption: A view of Earth's atmosphere., Credit: NASA
As a result of human caused increases in green house gases the troposphere is expanding and the stratosphere is shrinking. Between 1980 and 2018 t...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, RADIOLEX, KICI Iowa City and more


  • Added: Jun 04, 2021
  • Length: 02:00
  • Purchases: 10
644-Tracking Meteoroids
From: Albert Grauer
Series: Travelers In The Night
Piece image
A team of astronomers find that as many as 14 comets which came to less than 4 times the Moon's distance from us as long as 4,000 years ago are de...

Bought by Simply Beautiful, Allegheny Mountain Radio, KRZA, WTIP, Harford Community Radio and more


  • Added: May 29, 2021
  • Length: 02:00
  • Purchases: 8
643-Space Vehicles
From: Albert Grauer
Series: Travelers In The Night
Caption: SpaceX Starship, Credit: SpaceX
New Rocket engines will revolutionize space travel to the Moon and Mars.

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, KKRN, KRWG and more


  • Added: May 22, 2021
  • Length: 02:00
  • Purchases: 8
642-Vesta Fragment
From: Albert Grauer
Series: Travelers In The Night
Caption: The Asteroid Vesta, Credit: NASA
An impacting object hit the asteroid Vesta making a 10 mile diameter crater and in the process blasted loose fragments which have been orbiting th...

Bought by Simply Beautiful, Allegheny Mountain Radio, KTAL-LP [Las Cruces Community Radio], KICI Iowa City, KGLP and more


  • Added: May 16, 2021
  • Length: 02:00
  • Purchases: 8
641-Backyard Astronomy
From: Albert Grauer
Series: Travelers In The Night
Caption: Hubble Image, Credit: NASA
In March and April every year amateur astronomers, around the world, in Messier Marathons, attempt to view all of 110 objects in the Messier cata...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KRWG and more


  • Added: May 08, 2021
  • Length: 02:00
  • Purchases: 9
640-Rocks or Rockets
From: Albert Grauer
Series: Travelers In The Night
Piece image
Asteroid hunters have discovered a curious object. It appears likely to be either a rock ejected from the Moon or a piece of space junk from a hu...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, Harford Community Radio, KICI Iowa City and more


  • Added: May 02, 2021
  • Length: 02:00
  • Purchases: 9
639-Earth Approachers
From: Albert Grauer
Series: Travelers In The Night
Piece image
During a recent 60 day period asteroid hunters discovered 29 space rocks as they passed closer to us than the Moon. These small asteroids averaged...

Bought by Simply Beautiful, Allegheny Mountain Radio, KICI Iowa City, KGLP, Harford Community Radio and more


  • Added: Apr 24, 2021
  • Length: 02:00
  • Purchases: 9
638-Methane
From: Albert Grauer
Series: Travelers In The Night
Caption: Artist’s conception of early Earth after several large asteroid impacts, moving magma on to the surface. , Credit: Simone Marchi/SwRI
How ET could know there is life on Earth.

Bought by Simply Beautiful, Allegheny Mountain Radio, KICI Iowa City, KGLP, WTIP and more


  • Added: Apr 18, 2021
  • Length: 02:00
  • Purchases: 9
637-Martian Dust
From: Albert Grauer
Series: Travelers In The Night
Caption: Zodiacal Light and Mars , Credit: Joshua Rhoades
After sunset in the spring and before sunrise in the fall, at a natural night sky location like the Cosmic Campground International Dark Sky Sanctu...

Bought by Simply Beautiful, Allegheny Mountain Radio, KICI Iowa City, KGLP, KKRN and more


  • Added: Apr 11, 2021
  • Length: 02:00
  • Purchases: 9
636-90 Inch
From: Albert Grauer
Series: Travelers In The Night
Caption: 90 Inch Bok Telescope, Credit: Steward Observatory
On Kitt Peak in Arizona, the Steward Observatory's Bok telescope's 90 inch light collecting mirror enables the discovery, study, and tracking of sp...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KICI Iowa City and more


  • Added: Apr 02, 2021
  • Length: 02:00
  • Purchases: 9
635-Exploring Mars
From: Albert Grauer
Series: Travelers In The Night
Caption: This artist's concept depicts NASA's Mars 2020 rover on the surface of Mars., Credit: NASA/JPL-Caltech
We are lucky to be alive in an age when anyone with an internet connection can participate in the exploration of Mars. Your unique brain-eye combi...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KKRN and more


  • Added: Mar 26, 2021
  • Length: 02:00
  • Purchases: 9
634-Meteor Goes Splat
From: Albert Grauer
Series: Travelers In The Night
Piece image
On 28 February 2021 at 9:54PM a large slow moving fireball meteor was observed over England, Northern Ireland, Wales, and Scotland. The Wichcombe m...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KICI Iowa City and more


  • Added: Mar 20, 2021
  • Length: 02:00
  • Purchases: 9
633-Dress Rehearsal
From: Albert Grauer
Series: Travelers In The Night
Caption: Bright Fireball Meteor, Credit: NASA
The situation that asteroid hunters both train for and dread is the discovery of a large space rock on a collision course with planet Earth. Recent...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KRZA and more


  • Added: Mar 12, 2021
  • Length: 02:00
  • Purchases: 9
632-Couch Potato
From: Albert Grauer
Series: Travelers In The Night
Caption: Vesta, Credit: NASA
My Catalina Sky Survey teammate Richard Kowalski is the first person in our group and perhaps the first person in the world to discover a potential...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WTIP, KICI Iowa City and more


  • Added: Mar 07, 2021
  • Length: 02:00
  • Purchases: 9
631-Greg's Comet
From: Albert Grauer
Series: Travelers In The Night
Piece image
My Catalina Survey Teammate Greg Leonard was asteroid hunting with our 60 inch telescope on Mt. Lemmon, Arizona when he spotted a fuzzy object wit...

Bought by Simply Beautiful, Allegheny Mountain Radio, KICI Iowa City, WTIP, KGLP and more


  • Added: Feb 28, 2021
  • Length: 02:00
  • Purchases: 10
630-Largest Asteroid
From: Albert Grauer
Series: Travelers In The Night
Caption: Eros, Credit: NASA
My Catalina Sky Survey teammate David Rankin was asteroid hunting in the constellation of Hercules when he spotted a fast moving point of light str...

Bought by Simply Beautiful, Allegheny Mountain Radio, KTAL-LP [Las Cruces Community Radio], KGLP, KBMF 102.5FM Butte, Montana and more


  • Added: Feb 21, 2021
  • Length: 02:00
  • Purchases: 10
629-Loneliest Asteroid
From: Albert Grauer
Series: Travelers In The Night
Piece image
My Catalina Sky Survey teammate David Rankin was asteroid hunting in the constellation of Canes Venatici with our 60 inch telescope on Mt. Lemmon, ...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, KICI Iowa City, WLPR and more


  • Added: Feb 14, 2021
  • Length: 02:00
  • Purchases: 10
628-Close Approaches
From: Albert Grauer
Series: Travelers In The Night
Piece image
In 2020 my team the Catalina Sky Survey discovered 171 asteroids which can occasionally come closer to us than our Moon. In fact 21 of them, averag...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, WLPR , WTIP and more


  • Added: Feb 05, 2021
  • Length: 02:00
  • Purchases: 10
627-Toughest Asteroids
From: Albert Grauer
Series: Travelers In The Night
Caption: Eros, Credit: NASA
In 2020, my team the Catalina Sky Survey discovered 14 extremely tough asteroids which regularly travel closer to the Sun than the planet Mercury. ...

Bought by Simply Beautiful, Allegheny Mountain Radio, KGLP, KBMF 102.5FM Butte, Montana, WTIP and more


  • Added: Jan 29, 2021
  • Length: 02:00
  • Purchases: 11

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