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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

680-Comets and Asteroids(454)

Travelers In The Night ·

2022/02/18

If you set your mind to it, you can find and hold a sample of an asteroid, called a meteorite, which has landed on the Earth's surface. On the other hand, watching major meteor showers will allow you to see but not touch comet dust as it enters and burns up in the Earth's atmosphere.

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2:01

168E-180-An Eternal One

Travelers In The Night ·

2022/02/15

Catalina Sky Survey teammate Richard Kowalski found a faint moving point of light in the night sky. After his discovery observations were posted on the Minor Planet Center's website it was observed by 10 other telescopes around the world and given the name 2013 US10. It has taken additional observations to reveal that Kowalski's object is not an asteroid but rather a comet which came closest to the Sun on November 15, 2015. After that its speed will be so great that it will leave our solar system

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2:01

679-Hammer(453)

Travelers In The Night ·

2022/02/11

When Asteroid Hunters find a relatively large asteroid on a collision course with planet Earth, the challenge is to change its path to make it miss our home planet.

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2:01

167E-179-Planets,Billiards,&Alchemy

Travelers In The Night ·

2022/02/08

"I do not know how I may appear to the world, but to myself I seem to have been only like a boy, playing on the sea-shore, and diverting myself, in now and then finding a smoother pebble or prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.""Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things"These are only two of the quotes attributed to Sir Isaac Newton.

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2:01

678-Greg's Comet(425)

Travelers In The Night ·

2022/02/04

Greg's comet comes into our neighborhood once per human lifetime and spends most of it's time in the lonely space high above or far below the rest of the members of our solar system.

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2:01

166E-178-Monster Telescope

Travelers In The Night ·

2022/02/01

Imagine a monster telescope that can collect 37 million times more light than can enter your eye. A huge telescope with this capability, planned by the European scientific community, will sit atop a 10,000 foot high mountain in the high dry desert of northern Chile.

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2:01

677-30 Years of Fireballs

Travelers In The Night ·

2022/01/28

Fireballs are meteors which become brighter than the planet Venus and can sometimes be seen in the daytime. If you are lucky to see a fireball send in your report to the American Meteor Society and become a citizen scientist.

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2:01

165E-177-Flying Peanut

Travelers In The Night ·

2022/01/25

For 16 years, since its discovery at Lowell Observatory, humans knew 1999 JD6 only as a strange, spinning, moving point of light in the night sky. It orbits the Sun once every 303 days on a path that brings it relatively close to Mercury, Venus, and Earth. In the far distant future this small world is likely to collide with one of these planets, or the Sun, or be ejected completely from the solar system. A RADAR movie made with a radio telescope reveals 1999 JD6 to be two asteroids in contact

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2:01

676-Cloud 7(449)

Travelers In The Night ·

2022/01/21

To give you an idea of the asteroid traffic in our neighborhood, on a mostly cloudy night, through holes in the clouds, in a space of less than 2 hours, my Catalina Sky Survey teammate Richard Kowalski posted 7 new close approaching asteroid discoveries on the Minor Planet Center's Near Earth Object Confirmation Page.

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2:01

164E-176-Weird Life

Travelers In The Night ·

2022/01/18

Our everyday world is in the thin web of life that surrounds our planet. We see living organisms made possible by solar energy, water, air, and nutrients from the Earth. Maybe all living creatures are not in an environment similar to ours. When looking for life in other places in the Universe we can take some clues from living systems in extreme environments on our own planet.

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2:01

675-Nuking An Asteroid(447)

Travelers In The Night ·

2022/01/14

Tonight, even though the chances are extremely slim, an asteroid hunter could find a sizable asteroid on a collision course with planet Earth. If we have decades warning, the potential impactor's arrival time could be changed by impacting the dangerous object with a high velocity mass or if we have less time we will need to nuke it which will either blow it to bits or give it a rocket like push.

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2:01

163E-175-One 4 Ukraine

Travelers In The Night ·

2022/01/11

Currently the majority of the Earth Approaching objects are found by my team, the Catalina Sky Survey or the Pan STARRs group in Hawaii. Both employ large telescopes, very expensive electronic cameras, and high powered computer systems. However, an expert observer with a small 12 inch telescope and an electronic detector can still make interesting discoveries.

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2:01

674-Asteroid Homestead(446)

Travelers In The Night ·

2022/01/07

In the future one can envision a space mining family boarding a descendent of the SpaceX Falcon Heavy Launch Vehicle for a trip into low Earth orbit. A few hundred miles above the Earth's surface they would rendezvous with their asteroid mining spacecraft which will be their home for the next five years or so.

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2:01

162E-174-Fascinating Europa

Travelers In The Night ·

2022/01/04

You can spot Europa with almost any small telescope as a moving point of light orbiting the planet Jupiter just like Galileo Galilei did 400 years ago. Of the 4 moons which you will see Europa is the one second closest to Jupiter.

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2:01

673-Christmas Comet(437)

Travelers In The Night ·

2021/12/31

On December 25, 2017, while searching for Earth approaching asteroids in the constellation of Virgo, the Universe gave my Catalina Sky Survey teammate Greg Leonard a Christmas present in the form of a comet which now bears his name.

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2:01

161E-173-An Earth Like Planet

Travelers In The Night ·

2021/12/28

Since the dawn of our race, it is likely that humans have looked into the night sky and wondered if they are alone in the Universe on a unique planet. The NASA Kepler spacecraft has discovered more than a thousand planets orbiting distant stars. A newly discovered planet, Kepler-452b has spent 6 billion years in the habitable zone of its star. In the 4.5 billion years of the Earth's history the parade of more than 5 billion species has included single cell organisms, various multi cellular life

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2:01

672-Meteor Whispers(427)

Travelers In The Night ·

2021/12/24

Recent scientific studies have begun to shed light on the interesting mystery of how the small number of what we now call electrophonic meteors produce simultaneous light and sound. If you are lucky you could hear a meteor's dying whispers and could even be the first person to record these sounds on your cell phone.

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2:01

160E-172-Number 1602

Travelers In The Night ·

2021/12/21

The one thousand six hundred and second potentially hazardous asteroid was discovered by the Pan-STARRS group in Hawaii. Followup observations were made by telescopes in Hawaii, France, Australia, Italy, Germany, and Pennsylvania. The Minor Planet Center used these vital observations to calculate an orbit and gave it the name 2015 OC22.

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2:01

671-Long Winter Nights(424)

Travelers In The Night ·

2021/12/17

Long Winter nights with good seeing, from start to finish, are those on which the asteroid hunter makes new discoveries while being treated to views of millions of stars, gas clouds, and galaxies which inspire a child like sense of wonder.

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2:01

159E-171-Planet's Airglow

Travelers In The Night ·

2021/12/14

At the few remaining natural night sky viewing locations on Earth the horizon has a faint glow in every direction. Near the magnetic poles, this night glow appears to join with the relatively bright higher altitude aurora which covers larger portions of the sky and exhibits beautiful colors including green and red. Green light is the strongest component of the Earth' airglow and comes from oxygen atoms which have become energized by our Sun.

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1,271 results

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