892-140m-asteroids

892-140m-asteroids

Author: Albert D. Grauer March 27, 2026 Duration: 2:01
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 track 90% of the 1 km sized asteroids capable of effecting local mass destruction as well as global disruption of agriculture and other human activities. This goal has been accomplished. In 2005 Congress extended the mandate to require NASA to detect and track 90% of the 140-m asteroids capable of destroying a large metropolitan area.

Each episode of Travelers In The Night feels like a quiet, personal conversation under a dark sky. Hosted by astronomer Dr. Albert D. Grauer, this podcast brings the distant cosmos into sharp, intimate focus. Dr. Grauer isn't just an observer; he's an active participant in the hunt, working with the Catalina Sky Survey team that has consistently discovered near-Earth asteroids for years. In these brief and engaging segments, you'll hear firsthand accounts of what it's like to track these ancient celestial travelers-the asteroids and comets that silently pass by our world. The discussions move beyond simple facts to explore the real-world implications of these discoveries, from planetary defense to the sheer wonder of our dynamic solar system. Accompanied by the contemplative music of John Lyell's "Eternity," each installment offers a moment of calm reflection on humanity's place in the universe. It’s a perfect blend of grounded science and cosmic curiosity, making complex astronomical concepts accessible and deeply fascinating. For anyone who has ever looked up and wondered what's out there moving in the dark, this podcast provides a direct line to the front lines of discovery.
Author: Language: English Episodes: 1000

Travelers In The Night
Podcast Episodes
302E-321-Dangereous Comet [not-audio_url] [/not-audio_url]

Duration: 2:01
Protection against a comet strike is worth considering. Every year, if we are lucky, several comets can come close enough for the Sun to warm and us to see the beautiful changing dust and gas clouds around them with bino…
814-Threat of Solar Storms [not-audio_url] [/not-audio_url]

Duration: 2:01
Solar storms on our home planet occur when bursts of visible, ultraviolet and other photons hit our atmosphere and/or streams of energetic particles in the solar wind interact with Earth’s magnetic field. Mild solar stor…
301E-320-WOW What a Ride [not-audio_url] [/not-audio_url]

Duration: 2:01
It's a good thing this one will miss Earth. Riding the surface of the asteroid that my Catalina Sky Survey teammate Richard Kowalski recently discovered would be an incredible experience.
813-RADAR Observations of Close Approacher [not-audio_url] [/not-audio_url]

Duration: 2:01
Astronomers measure an asteroid’s position on the sky using a two dimensional system similar to the latitude and longitude coordinates we obtain with our GPS. For the vast majority of asteroids, we cannot measure the thi…
300E-319-Lost and Found [not-audio_url] [/not-audio_url]

Duration: 2:01
When asteroid hunters follow an object in the night sky for a few hours or a couple of days they are only able to observe a snippet or tracklet of the object's hundreds to thousands of days long path around the Sun. If w…
812-The Benu Files I [not-audio_url] [/not-audio_url]

Duration: 2:01
A recent scientific paper characterizes the 123 grams of the regolith or surface material from the asteroid Bennu which NASA’s OSIRIS-REx spacecraft brought back to Earth after a successful 7 year sample and return missi…
299E-318-Caves of Mars [not-audio_url] [/not-audio_url]

Duration: 2:01
Presently the surface of Mars is very dry and any liquid water that reaches it quickly boils away since the martian atmospheric pressure is what you could experience in your space suit 30 to 50 miles above the Earth's su…
811-Martian Meteroite Hunters [not-audio_url] [/not-audio_url]

Duration: 2:01
Perhaps someday humans will travel to Mars, walk the surface of the red planet, and collect meteorites. Recent studies suggest Mars to be an exciting place to find ancient relics of our solar system
298E-317-Psyche Water [not-audio_url] [/not-audio_url]

Duration: 2:01
The asteroid Psyche may be one of the most expensive pieces of real estate in the solar system. It is a small world about 116 miles in diameter and is composed of almost pure nickel-iron metal. It is located in the aster…
810-Humans Can [not-audio_url] [/not-audio_url]

Duration: 2:01
The James Webb Space Telescope or JWST for short is a superb scientific instrument which is revolutionizing our understanding of the structure of the universe and is providing a tool to help us to explore the possibility…