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 4,850 PRX free purchases as well as more than 720,000 downloads 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.


712 Pieces

Order by: Newest First | Oldest First
Caption: Halley's Comet, Credit: NASA
On December 25, 2017, while searching for Earth approaching asteroids in the constellation of Virgo, the Universe gave my Catalina Sky Survey team...

Bought by WTIP, KKRN, KRWG, KICI Iowa City, and Harford Community Radio


  • Added: Dec 19, 2021
  • Length: 02:00
  • Purchases: 5
Caption: Fireball Exploding, Credit: NASA
Recent scientific studies have begun to shed light on the interesting mystery of how the small number of what we now call electrophonic meteors pro...

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


  • Added: Dec 12, 2021
  • Length: 02:00
  • Purchases: 7
Caption: Mt. Lemmon, AZ snow storm, Credit: A.D. Grauer
Long Winter nights with good seeing, from start to finish, are those on which the asteroid hunter makes new discoveries while being treated to view...

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


  • Added: Dec 05, 2021
  • Length: 02:00
  • Purchases: 8
Caption: Laser Sail, Credit: Project Breakthrough
Laser propelled ultra light space probes could be sent to explore nearby worlds.

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


  • Added: Nov 28, 2021
  • Length: 02:00
  • Purchases: 8
Caption: Voyager Leaving Solar System, Credit: NASA
What plant seeds will be left for interstellar travelers to take with them?

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


  • Added: Nov 21, 2021
  • Length: 02:00
  • Purchases: 9
Caption: Mars, Credit: NASA
Intriguing features which change with the Martian seasons mimic flows of liquid water on the Earth's surface.

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


  • Added: Nov 14, 2021
  • Length: 02:00
  • Purchases: 8
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 KICI Iowa City, KGLP, RADIOLEX, KRWG, KKRN and more


  • Added: Nov 07, 2021
  • Length: 02:00
  • Purchases: 8
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 KICI Iowa City, KGLP, RADIOLEX, KRWG, KKRN and more


  • Added: Oct 31, 2021
  • Length: 02:00
  • Purchases: 8
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
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
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
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
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
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
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
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
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
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
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
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