Travelers In The Night

Series produced by Al 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 5,500 PRX free purchases as well as more than 762,000 downloads on the internet. It has been aired on 55 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.


746 Pieces

Order by: Newest First | Oldest First
747-Alone or Not(535)
From: Al Grauer
Series: Travelers In The Night
Caption: Solar Sail and Laser Power Interstellar Spacecraft, Credit: Breakthrough Starshot
In our Milky Way Galaxy alone there are probably 25 billion planets located within the habitable zone of its star where there could be air to breat...

Bought by RADIOLEX, Raven Radio, KRWG, and KKRN


  • Added: May 21, 2023
  • Length: 02:00
  • Purchases: 4
746-Followups(534)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroids, Credit: NASA
Without followup data, many if not most of the Earth approaching objects would be lost as they move away from us leaving us with no idea when they ...

Bought by Raven Radio, WTIP, RADIOLEX, KKRN, KRWG and more


  • Added: May 14, 2023
  • Length: 02:00
  • Purchases: 6
745-100 Moons(533)
From: Al Grauer
Series: Travelers In The Night
Caption: Schmidt Telescope Mt. Bigelow, Arizona, Credit: CSS/U. Arizona
A small telescope makes a substantial contribution to our knowledge of the celestial visitors to our neighborhood

Bought by KTAL-LP [Las Cruces Community Radio], Raven Radio, KGLP, RADIOLEX, KRWG and more


  • Added: May 07, 2023
  • Length: 02:00
  • Purchases: 7
744-Teddy’s Debut(532)
From: Al Grauer
Series: Travelers In The Night
Caption: Opening the 60 Inch on Mt. Lemmon , Credit: CSS/U. Arizona
On a recent training night with Teddy Pruyne at the controls of our 60 inch telescope on Mt. Lemmon, Arizona, this duo discovered six new Earth App...

Bought by Raven Radio, WTIP, RADIOLEX, KGLP, KRWG and more


  • Added: Apr 30, 2023
  • Length: 02:00
  • Purchases: 8
743-Alex’s Catch(531)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroids, Credit: NASA
On a cold windy night, with clouds frustrating his search, my Catalina Sky Survey teammate Alex Gibbs discovered 8 new celestial visitors while obs...

Bought by KGLP, KICI Iowa City, Raven Radio, RADIOLEX, WTIP and more


  • Added: Apr 23, 2023
  • Length: 02:00
  • Purchases: 8
742-Cuban Meteorites(530)
From: Al Grauer
Series: Travelers In The Night
Piece image
A large fireball meteor which exploded over Cuba produced a number of interesting results.

Bought by KICI Iowa City, KGLP, Raven Radio, RADIOLEX, KRWG and more


  • Added: Apr 16, 2023
  • Length: 02:00
  • Purchases: 8
741-Africano(529)
From: Al Grauer
Series: Travelers In The Night
Caption: NASA Stardust
My Catalina Sky Survey Teammate Brian Africano discovered his 4th comet while asteroid hunting in the constellation of Ursa Major with our Schmidt ...

Bought by KGLP, WYAP, RADIOLEX, Raven Radio, KICI Iowa City and more


  • Added: Apr 09, 2023
  • Length: 02:00
  • Purchases: 8
740-Asteroid Billiards(528)
From: Al Grauer
Series: Travelers In The Night
Caption: Vega's Asteroids, Credit: NASA
NASA's Double Asteroid Redirection Test or DART for short will test methods to make a dangerous asteroid miss Earth

Bought by KICI Iowa City, Raven Radio, RADIOLEX, KGLP, WTIP and more


  • Added: Apr 02, 2023
  • Length: 02:00
  • Purchases: 8
739-Comet Groller(527)
From: Al Grauer
Series: Travelers In The Night
Caption: Comet ISON, Credit: NASA
My Catalina Sky Survey teammate Hannes Groller was asteroid hunting with our Schmidt telescope on Mt. Bigelow, Arizona when he discovered his first...

Bought by Raven Radio, RADIOLEX, KGLP, KKRN, KRWG and more


  • Added: Mar 26, 2023
  • Length: 02:00
  • Purchases: 8
738-Tiny Visitor(526)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid Near Earth, Credit: ESA
A tiny space rock passes through the cloud of communications satellites surrounding the Earth.

Bought by KTAL-LP [Las Cruces Community Radio], KGLP, Raven Radio, RADIOLEX, WTIP and more


  • Added: Mar 19, 2023
  • Length: 02:00
  • Purchases: 9
737-Collision(525)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid Breakup, Credit: NASA
The object which the 2.3 mile diameter Gault hit is likely to have been a third of a mile diameter space rock. This celestial crash left Gault with...

Bought by WYAP, KTAL-LP [Las Cruces Community Radio], Raven Radio, RADIOLEX, WTIP and more


  • Added: Mar 12, 2023
  • Length: 02:00
  • Purchases: 9
736-Home Wrecker(524)
From: Al Grauer
Series: Travelers In The Night
Caption: IDA, Credit: NASA
The extremely remote chance that a dangerous mountain sized space rock has our number on it is what keeps my team going to our four telescopes in t...

Bought by WYAP, KGLP, Raven Radio, RADIOLEX, KRWG and more


  • Added: Mar 05, 2023
  • Length: 02:00
  • Purchases: 8
735-One Thousand(523)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroids, Credit: NASA
For the first time in history, an asteroid hunting team, the Catalina Sky Survey, has discovered more than 1,000 Earth approaching asteroids in a s...

Bought by WYAP, KGLP, Raven Radio, RADIOLEX, WTIP and more


  • Added: Feb 19, 2023
  • Length: 02:00
  • Purchases: 9
734-Comets Africano(522)
From: Al Grauer
Series: Travelers In The Night
Caption: Comet ISON, Credit: NASA
During Comet C/2018 V4 Africano's last visit to the inner solar system humans were erecting the outer ring at Stonehenge. At the rate human's are c...

Bought by WYAP, KGLP, KTAL-LP [Las Cruces Community Radio], WTIP, KKRN and more


  • Added: Feb 26, 2023
  • Length: 02:00
  • Purchases: 7
733-Lunar Space Rock(521)
From: Al Grauer
Series: Travelers In The Night
Caption: Lunar Space Rock, Credit: NASA
Recently, my Catalina Sky Survey teammate Hannes Groller discovered an Earth approaching asteroid which has a speed consistent with it being ejecte...

Bought by WYAP, KGLP, Raven Radio, RADIOLEX, WTIP and more


  • Added: Feb 12, 2023
  • Length: 02:00
  • Purchases: 9
732-Comet Lemmon(520)
From: Al Grauer
Series: Travelers In The Night
Caption: Comet ISON, Credit: NASA
An interstellar traveler visits our neighborhood on its tour of the Milky Way.

Bought by WYAP, KGLP, Raven Radio, KKRN, and KICI Iowa City


  • Added: Feb 06, 2023
  • Length: 02:00
  • Purchases: 5
731-Greg's Comet(519)
From: Al Grauer
Series: Travelers In The Night
Caption: Halley's Comet, Credit: NASA
The discovery of a Jupiter family comet whose fate is to become a garden variety main belt asteroid.

Bought by WYAP, KTAL-LP [Las Cruces Community Radio], Raven Radio, RADIOLEX, KGLP and more


  • Added: Jan 29, 2023
  • Length: 02:00
  • Purchases: 7
730-Busy Night(518)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid, Credit: -Dieter-Spannknebel-Getty-Images
On Halloween night while observing with the Catalina Sky Survey's 60 inch telescope on Mt. Lemmon, Arizona I discovered 21 space rocks streaking th...

Bought by WYAP, KGLP, Raven Radio, RADIOLEX, WTIP and more


  • Added: Jan 22, 2023
  • Length: 02:00
  • Purchases: 9
729-Close Again(517)
From: Al Grauer
Series: Travelers In The Night
Caption: Artists Conception: Small Space Rocks, Credit: Texas A&M
As asteroid hunters equipment and skills continue to improve we will be able to find and track some of these tiny impactors and perhaps be able to ...

Bought by WYAP, KGLP, Raven Radio, RADIOLEX, WTIP and more


  • Added: Jan 15, 2023
  • Length: 02:00
  • Purchases: 8
728-Space Weather(516)
From: Al Grauer
Series: Travelers In The Night
Caption: Earth Engulfed in Space Weather, Credit: NASA
Space is not all that far away. If a powerful solar eruption in 2012 had happened a week earlier, the blast of radiation would have caused wide spr...

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


  • Added: Jan 08, 2023
  • Length: 02:00
  • Purchases: 8

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