Travelers In The Night
Channel Details
Travelers In The Night
A real "Science Snack" for anyone who is interested in the extraterrestrial.Dr. Al Grauer is a member of the Catalina Sky Survey which has led the world in near Earth asteroid discoveries for 17 of the past 19 years.The music is "Eternity" by John Lyell.Astronomy Asteroids Space NASA Comets Earth...
Recent Episodes
1086 episodes
908-Head On
Asteroid hunters find asteroids by looking for objects which change their position relative to the stars. If an asteroid happened to match the Earth’...
397E-438-Bright Darkness
Most of the humans on planet Earth have never witnessed that the natural night sky is not dark; but rather it is alive with it's own lights. To see fo...
907-Large and Close
My Catalina Sky Survey teammate Josh Hogan was asteroid hunting in the constellation of Ursa Major with our small but mighty Schmidt telescope when he...
396E-437-Christmas Comet
On December 25, 2017, while searching for Earth approaching asteroids in the constellation of Virgo, the Universe gave my Catalina Sky Survey teammate...
906-Pierazzo Lunar Crater
The visually stunning Lunar Crater Pierazzo, named for the late Planetary Scientist Elizabeth “Betty” Pierazzo was observed by the Artemis II Crew as...
395E-436-Lonely Asteroids
Most asteroids are located in the lonely space between Mars and Jupiter where the average distance between two asteroids is about 600,000 miles. Even...
905-Hogan’s Interesting PHA
My Catalina Sky Survey teammate Josh Hogan has discovered a 2 football field diameter asteroid that was placed on NASA’s Sentry list because it has a...
394E-435-Number 31
Asteroids appear as moving points of light in an asteroid hunter's images so that when my Catalina Sky Survey teammate Alex Gibbs spotted a fuzzy movi...
904-Ohio Fireball
On St. Patrick’s day 2026 a fireball meteor brighter than the full moon streaked across the daytime sky. The American Meteor Society received 223 eye...
393E-431-Tough Space Rocks
Most small asteroids are likely to be rubble piles of small rocks and dust loosely held together by their weak force of gravity while others may be ma...
903-Eclipse of the Moon Observing
My team the Catalina Sky Survey has pioneered searching for asteroids coming from the direction of the dark side of the moon.
392E-430-Deportee
The beautiful star cluster the Pleiades in the constellation of Tauris is about 100 million years old making it one of the youngest objects that you c...
902-Lighting Up The Night
A start up company Reflect Orbital is proposing to launch 50,000 satellite mirrors by 2035 to illuminate solar panels on Earth all night long. This wo...
391E-428-Phaethon
The mysterious Earth approaching object Phaethon (FAY-eh-thon) does not fit neatly into our definition of either an asteroid or a comet. Further it ap...
901-Rubin and Incoming Asteroids
However, according to a recent research project, the Rubin Observatory will discover but not give an adequate warning time for objects destined to hit...
390E-427-Meteor Whispers
Often observers report hearing a percussive sound, like a sonic boom from an aircraft, minutes after viewing a bright meteor fireball. In addition, in...
900-Earth Life from Mars
Some of the 635,000 impact craters found on Mars are the result of such violent impacts that pieces of Mars are ejected, travel around the solar syste...
389E-426-Rose Rules Again
389E-426-Rose Rules Again Recently my Catalina Sky Survey teammate Rose Matheny discovered 8 new Earth approaching object candidates on a single night...
899-Hitch Hiking an Asteroid to Mars
Asteroids could provide a solution for the serious problem of how to protect astronauts from harmful solar and cosmic radiation during long duration s...
388E-425-Greg's Comet
My Catalina Sky Survey teammate Greg Leonard was searching for Earth approaching objects with our 60 inch telescope on Mt. Lemmon, Arizona when he dis...
898-Pandora
Looking into a star filled sky at a place like the Cosmic Campground International Dark Sky Sanctuary in New Mexico inspires a person to wonder if our...
387E-424-Long Winter Nights
Winter nights can be exhausting, productive, as well as sometimes frustrating for asteroid hunters. At the Sixty Inch Telescope on Mt. Lemmon, Arizona...
897-Kacper's Comet
In 2007 a small icy object moving in the constellation of Ursa Minor crossed the orbit of Pluto at a speed of approximately 4.2 mi/s starting its jour...
386E-423-Silent ET
Oumuamua (“Oh-moo-ah-moo-ah”) is the asteroid that zipped by the Earth on a trajectory that started beyond our solar system in truly deep space. After...
896-Sneaky But Potentially Dangerous
My Catalina Sky Survey teammate Greg Leonard was asteroid hunting with our 60 inch telescope on Mt. Lemmon, Arizona when he came across an unknown mov...
385E-421-New Aten
Recently my Catalina Sky Survey teammates Carson Fuls and Greg Lenoard discovered an Aten asteroid which orbits the Sun once every 272 days and on a p...
895-Tracking Space Junk
According to NASA an average of one catalogued piece of space junk per day has come down to Earth over the past 50 years. Research is described which...
384E-420-Dry Sands
The NASA Curiosity Rover has shown us evidence of ancient rivers and bodies of liquid water on the martian surface. Given it's thin cold atmosphere, s...
894-Discovery Night at the Schmidt
On a recent night my Catalina Sky Survey teammate Vivian Carvajal found 4 Earth approaching space rocks with our small but mighty Schmidt telescope on...
383E-419-ET's Cigar
In 2012 as it crossed the orbit of Neptune heading towards the Sun a small space rock was 250 times fainter than can be detected by the Hubble Space T...
893-DarkSky Oregon
Artificial light at night also known as light pollution is degrading human safety and health as well as damaging the natural environment on which we a...
382E-418-Fireball II
Recently there were four fireball meteors, brighter than the planet Venus, which exploded over Germany, France, Ohio, and Arizona within the space of...
892-140m-asteroids
Humans can mitigate the damage done by the impact of an asteroid given a sufficient lead time. In 1998, the US Congress mandated NASA to detect and tr...
381E-417-Red Dwarf Planets
Astronomers continue to be delighted when they discover an Earth sized planet. Scientists were thus very disappointed when the red dwarf star hosting...
891-2026-AA
My Catalina Sky Survey teammate Tracie Beuden was observing with our Schmidt telescope on Mt. Bigelow, Arizona in the constellation of Persus when she...
380E-416-Odd Ball
The orbits of the planets are closely aligned with the extension of the Sun's equator into space and are contained within the flattened disk of materi...
890-Comet 467P(Linear-Grauer)
Astronomers using the 8.1 m Gemini South Telescope in Chile were excited by the fact that 467P (LINEAR-Grauer)’s Centaur like orbit had been changed a...
379E-415-Well Done
Once every 1,435 days , a 780 foot diameter space rock that my Catalina Sky Survey teammate Carson Fuls discovered makes an annihilation defying close...
889-Lick Observatory
In 1892 the world’s largest telescope, the Lick Observatory’s 36 inch refracting telescope made the news when E.E. Barnard discovered, Amalthea, the 5...
378E-414-Enormous Visitor
Without additional data, the true nature of the rapidly northward moving point of light my Catalina Sky Survey teammate Carson Fuls had just discovere...