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 4,500 PRX free purchases as well as more than 650,000 downloads and 33,000 followers on the internet. It has been aired on 54 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.


669 Pieces

Order by: Newest First | Oldest First
670-Laser Surfing(364)
From: Al Grauer
Series: Travelers In The Night
Caption: Laser Sail, Credit: Project Breakthrough
Laser propelled ultra light space probes could be sent to explore nearby worlds.

Bought by KRWG, KKRN, Harford Community Radio, and KTAL-LP [Las Cruces Community Radio]


  • Added: Nov 28, 2021
  • Length: 02:00
  • Purchases: 4
669-Seeds(356)
From: Al Grauer
Series: Travelers In The Night
Caption: Voyager Leaving Solar System, Credit: NASA
What plant seeds will be left for interstellar travelers to take with them?

Bought by KRZA, RADIOLEX, WTIP, KRWG, KKRN and more


  • Added: Nov 21, 2021
  • Length: 02:00
  • Purchases: 7
668-Dry Sands(420)
From: Al Grauer
Series: Travelers In The Night
Caption: Mars, Credit: NASA
Intriguing features which change with the Martian seasons mimic flows of liquid water on the Earth's surface.

Bought by RADIOLEX, KRWG, KKRN, WTIP, Harford Community Radio and more


  • Added: Nov 14, 2021
  • Length: 02:00
  • Purchases: 6
667-ET's Cigar(419)
From: Al Grauer
Series: Travelers In The Night
Caption: Artist's concept of interstellar object1I/2017 U1 ('Oumuamua) as it passed through the solar system after its discovery in October 2017. The aspect ratio of up to 10:1 is unlike that of any object seen in our own solar system., Credit: European Southern Observatory / M. Kornmesser
The first alien object to observed visiting our solar system arrives from truly deep space and leaves us with the mystery of what it is and how it ...

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


  • Added: Nov 07, 2021
  • Length: 02:00
  • Purchases: 6
666-Red Dwarf Planets(417)
From: Al Grauer
Series: Travelers In The Night
Caption: Gliese 887C, Credit: Mark Garlick/ University of Göttingen
Earth like planets are being discovered circling the most common type of star in our neighborhood of the Milky Way galaxy.

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


  • Added: Oct 31, 2021
  • Length: 02:00
  • Purchases: 6
665-Odd Ball(416)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid Shattering, Credit: NASA
A small asteroid soars into the lonely space high above and below the plane of our solar system.

Bought by KICI Iowa City, KGLP, RADIOLEX, WTIP, KRWG and more


  • Added: Oct 24, 2021
  • Length: 02:00
  • Purchases: 7
664-Extraterrestrial Whales(410)
From: Al Grauer
Series: Travelers In The Night
Caption: Europa, Credit: NASA
Perhaps the reason that we have not detected alien civilizations on distant worlds is because they exist in oceans covered by miles of radiation ab...

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


  • Added: Oct 17, 2021
  • Length: 02:00
  • Purchases: 8
663-Alien Rock?(409)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid Illustration, Credit: NASA/JPL-Caltech
A rock from another solar system is likely to have streaked by Earth before heading back into interstellar space.

Bought by KICI Iowa City, KGLP, RADIOLEX, WTIP, KKRN and more


  • Added: Oct 10, 2021
  • Length: 02:00
  • Purchases: 7
662-Earth's Pet Rock(408)
From: Al Grauer
Series: Travelers In The Night
Caption: Asteroid Eros, Credit: NASA
On it's gravitational leash, Earth's pet space rock, 2016 HO3, accompanies us at a distance of between 38 and 100 times the Moon's distance from Ea...

Bought by KICI Iowa City, KGLP, RADIOLEX, KRWG, KKRN and more


  • Added: Oct 03, 2021
  • Length: 02:00
  • Purchases: 7
661-Roving Venus (400)
From: Al Grauer
Series: Travelers In The Night
Caption: An illustration of a concept for a possible wind-powered Venus rover., Credit: NASA/JPL-Caltech
To survive on Venus where the temperature is 864F and the surface air pressure is 90 times that of Earth, NASA and JPL engineers are exploring the ...

Bought by KGLP, RADIOLEX, KICI Iowa City, KRWG, KKRN and more


  • Added: Sep 26, 2021
  • Length: 02:00
  • Purchases: 7
660-Double Comet (403)
From: Al Grauer
Series: Travelers In The Night
Caption: Comet Neat observed At Kitt Peak, Credit: NASA
What at first appeared to be an asteroid turned out to be a double comet.

Bought by KGLP, KICI Iowa City, RADIOLEX, KKRN, KRWG and more


  • Added: Sep 19, 2021
  • Length: 02:00
  • Purchases: 7
659-Martian Debris(382)
From: Al Grauer
Series: Travelers In The Night
Caption: Mars, Credit: NASA
Martian Trojan asteroids have stable orbits around the Sun, leading and trailing the red planet by 60 degrees, where the Sun's and Mars's gravity a...

Bought by KGLP, RADIOLEX, KKRN, KRWG, Harford Community Radio and more


  • Added: Sep 12, 2021
  • Length: 02:00
  • Purchases: 6
658-Fireball II(418)
From: Al Grauer
Series: Travelers In The Night
Caption: The Phoenix CityCam caught the flash of light around 8:30 p.m. on Nov. 14, 2017, Credit: City of Phoenix
Recently there were four fireball meteors, brighter than the planet Venus, which exploded over Germany, France, Ohio, and Arizona within the space ...

Bought by WTIP, KGLP, RADIOLEX, KRWG, KKRN and more


  • Added: Sep 05, 2021
  • Length: 02:00
  • Purchases: 7
657-Plant Companionship(407)
From: Al Grauer
Series: Travelers In The Night
Caption: NASA astronaut Peggy Whitson happily displays the progress of the Advanced Astroculture experiment aboard the International Space Station in July 2002., Credit: NASA
On Earth, human life is enabled by plants which provide us with calories, vitamins, fuel, medicines, and oxygen to breathe. In addition, recent sci...

Bought by RADIOLEX, KGLP, KRWG, KKRN, WTIP and more


  • Added: Aug 29, 2021
  • Length: 02:00
  • Purchases: 7
656-Moons of Florence(399)
From: Al Grauer
Series: Travelers In The Night
Piece image
The largest asteroid to come near the Earth in 100 years has two moons.

Bought by KGLP, RADIOLEX, KKRN, KRWG, WTIP and more


  • Added: Aug 22, 2021
  • Length: 02:00
  • Purchases: 7
655-Finding Space Rocks(391)
From: Al Grauer
Series: Travelers In The Night
Piece image
Finding a meteorite that has traveled billions of miles through space to reach it's present location is exciting. It might even be worth real money.

Bought by KGLP, WTIP, RADIOLEX, KRWG, KKRN and more


  • Added: Aug 14, 2021
  • Length: 02:00
  • Purchases: 7
654-Night Vision (401)
From: Al Grauer
Series: Travelers In The Night
Piece image
Experience the wonders of the Universe first hand using your night vision.

Bought by KGLP, RADIOLEX, KKRN, KRWG, WTIP and more


  • Added: Aug 07, 2021
  • Length: 02:00
  • Purchases: 7
653-Biggest Ear (300)
From: Al Grauer
Series: Travelers In The Night
Piece image
China's new big ear will be the most sensitive receiver to search for signals from alien civilizations.

Bought by KGLP, RADIOLEX, WTIP, KKRN, KRWG and more


  • Added: Jul 31, 2021
  • Length: 02:00
  • Purchases: 7
652-Our Number(314)
From: Al Grauer
Series: Travelers In The Night
Piece image
Recently my Catalina Sky Survey teammate Greg Leonard discovered, 2016 WJ1, a relatively large asteroid which can come close but will not hit the E...

Bought by KGLP, WTIP, RADIOLEX, KRWG, KKRN and more


  • Added: Jul 25, 2021
  • Length: 02:00
  • Purchases: 7
651-Spotting Meteors(397)
From: Al Grauer
Series: Travelers In The Night
Caption: Falling from Space, Credit: NASA/Bill Dunford
Meteors, shooting stars, or falling stars are different names for the streaks of light in the night sky which are in reality the dying embers of ti...

Bought by KGLP, RADIOLEX, WTIP, KKRN, KRWG and more


  • Added: Jul 17, 2021
  • Length: 02:00
  • Purchases: 7

Playlists That Feature This Series: