Loading...

PODCAST

Travelers In The Night

Albert D. Grauer

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 Impact Aliens

science astronomy

All Episodes

2:01

771-Nice PHA

Travelers In The Night ·

2023/11/17

NASA classifies 2023 SZ1 as a Potentially Hazardous Asteroid since it is larger than 140m in diameter and on its current path can come to about 6 times the Moon’s distance from us.Fortunately on its current path 2023 SZ1 will not come any closer than 42 times the Moon’s distance from us until after 2171.

en

2:01

258E-258E-270-Space Opals

Travelers In The Night ·

2023/11/14

Opal, the national gemstone of Australia, is silica, the most common ingredient of sand, with a number of water molecules attached to it. On Earth Opal forms when water evaporates from a slurry of sand and water which is deposited repeatedly in a crack or fissure in a rock over a long period of time. The resulting opal may contain from 3 to 21% water by weight.Professor Hilary Downes of Birkbeck College London headed up a team which discovered Opal in a meteorite which was found in Antartica

en

2:01

770-Hycean Worlds

Travelers In The Night ·

2023/11/10

Hycean Worlds, with masses between Earth and Neptune which have thin hydrogen rich atmospheres above a liquid water ocean may be very common in our neighborhood of the Milky Way. They could be an abode of life.

en

2:01

257E-269-Gamma Ray Eyes

Travelers In The Night ·

2023/11/07

If you woke up tomorrow with gamma ray eyes things would look very different. Geology would come to life as you peered into the Earth and became aware of the various minerals it contains. Gamma rays coming from stars, supernovae, pulsars, and black holes would create a fog extending over all of the sky.

en

2:01

769-Green Comet

Travelers In The Night ·

2023/11/03

Given the effects of climate change today who can predict what planet Earth will be like when C/2023 P1(Nishimura) comes back near our home planet in approximately 2455 AD.

en

2:01

256E-268-Mars Weather Report

Travelers In The Night ·

2023/10/31

Before you pack your bags for a trip to Mars you will want to check out the weather data that NASA's Curiosity Mars Rover has recorded over the past two Martian years.There is no getting around the fact that you will need a space suit and long woolies to survive on Mars.

en

2:01

768-Capricornus Observatory Csokako

Travelers In The Night ·

2023/10/27

In 2023 T. Maroti of the Capricornus Observatory, Csokako, Hungary discovered two Earth approaching asteroids which were passing through the night sky unnoticed by other observers. His equipment is an 11 inch telescope, electronic camera, and computer.

en

2:01

767-A Really Tough Customer

Travelers In The Night ·

2023/10/24

The more we learn about 322P/SOHO the stranger it becomes.

en

2:01

766-Korean Asteroid Hunters

Travelers In The Night ·

2023/10/13

The Catalina Sky Survey and the Korean teams of asteroid hunters will discover and track Earth approaching objects making the residents of our home planet safer

en

2:01

255E-267-Hiding from ET

Travelers In The Night ·

2023/10/10

Should humans hide from ET or should ET hide from us?

en

2:01

765-Bright-Fireball

Travelers In The Night ·

2023/10/06

Bright fireball meteors sometimes rain pieces of themselves onto the ground for meteorite hunters to discover.

en

2:01

254E-266-Colliding Planets

Travelers In The Night ·

2023/10/03

Collisions between planets, planetesimals, asteroids, and comets have produced the place where we live and breathe.Today scientists are replacing myths with solid evidence that violent impacts between planets, planetesimals, asteroids, and comets are very common in our galaxy. They play a vital role in the formation of solar systems which contain habitable planets.

en

2:01

764-Green-Airglow

Travelers In The Night ·

2023/09/29

The natural night sky is alive with its own lights. In addition to celestial sources often there is natural night sky airglow powered by space weather from above and/or tropospheric activity from below. It is not the Aurora Borealis. Amazing images show green airglow waves which are brighter than the Milky Way.The theory behind these beautiful images remains a mystery

en

2:01

253E-265-Dancing with Earth

Travelers In The Night ·

2023/09/26

The Moon is the Earth's long time dancing partner. This unequal pair revolve about a teeter totter type balance point which in turn orbits the Sun every 365 and a quarter days. A small asteroid has become a third partner in the Earth-Moon dance.

en

2:01

763-Hogan's Big Rock

Travelers In The Night ·

2023/09/22

My Catalina Sky Survey teammate Josh Hogan was asteroid hunting in the constellation Sextans with our 60 inch telescope on Mt. Lemmon, Arizona when he discovered the largest asteroid in nearly a decade

en

2:01

252E-264-Tough Guy

Travelers In The Night ·

2023/09/19

A tough rocky asteroid makes close approaches to the Sun.

en

2:01

762-Kacper's PHA

Travelers In The Night ·

2023/09/15

An object like 2023 MN5 impacts Earth once every 90,000 years or so creating a crater 5 miles in diameter an 1800 feet deep in sedimentary rock. 50 miles from the impact of such an object observers would feel the effects of a 7.1 Richter scale Earth. Rest assured that asteroid hunters will continue to track 2023 MN5 as it passes near Earth and Jupiter to make sure that its orbit does not change to make it a threat to humanity.

en

2:01

251E-263-Catching Shadows

Travelers In The Night ·

2023/09/12

Students and teachers are doing real science by measuring the shadows cast by distant objects in our solar system.For years humans knew Pluto, the first Trans-Neptunian object to be discovered, only as a moving point of light in the night sky. It wasn't until 58 years after it's discovery that astronomers were able to observe a star as Pluto passed in front of it. These data gave an accurate diameter and also proved that Pluto has an atmosphere. There are estimated to be 100,000 Trans-Neptunian

en

2:01

761-Allesandra's Duo

Travelers In The Night ·

2023/09/08

In less than two hours my Catalina Sky Survey teammate Allesandra Serrano discovered two small fast moving space rocks. Both of them passed through the Earth-Moon system unimpeded. Other space rocks are not so lucky.

en

2:01

250E-262-Shooting Star's Daddy

Travelers In The Night ·

2023/09/05

The source of the Geminid Meteor shower each December is a strange little asteroid.

en

1,271 results

Similar Podcasts

Rabbit Hole of Research

Jotham Austin, II PhD, Nick Elizalde,...

Short Science Fiction Collection

Vaqrious

Planetterrian Daily

Patrick · Nerra Network

Short Wave

NPR

La Science CQFD

France Culture