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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

791-A Fireball and It’s Gifts

Travelers In The Night ·

2024/04/05

It all started when Krisztián Sárneczky at the Konkoly Observatory near Budapest, Hungary reported the position and brightness of an unknown asteroid rapidly moving through the constellation of Lynx. Three hours later , the object, now called 2024 BX1 exploded harmlessly in our atmosphere

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2:01

278E-292-Disintegrating Comet

Travelers In The Night ·

2024/04/02

Comets are made up of organic materials and ices of various substance which are left over from the formation of our solar system 4.6 billion years ago. When the gravity of a nearby star or other object changes one of these dirty snowball's orbit, its path can bring it into the inner solar system and thus near enough for the Sun to affect it and for us to study what is going on.

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2:01

790-Vivian's Debut

Travelers In The Night ·

2024/03/29

My new Catalina Sky Survey Teammate Vivian Carjaval was scheduled for three 13h long winter nights for her first solo observing run on our Schmidt telescope on Mt. Bigelow, Arizona. As luck would have it she couldn’t observe the first night because of high winds and blowing snow, while on the second night she was treated to lots of clouds under a bright moon, however, on the third night the Universe treated her to a clear night and sent two unknown Earth Approaching asteroids her way.

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2:01

277E-291-Rose Rules

Travelers In The Night ·

2024/03/26

Anyone who thinks women can't do computers and science needs to meet my Catalina Sky Survey teammate Rose Matheny. On a recent 3 night observing run at the 60 inch telescope on Mt. Lemmon, Rose took over the world of asteroid hunting when she posted 82 new potentially Earth approaching objects on the Minor Planet Center's NEO Confirmation Page. For the next several days telescopes around the world obtained additional data on Rose's discoveries. When the dust settled 29 of Rose's discoveries were

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2:01

789-Asteroid With A Tail

Travelers In The Night ·

2024/03/22

My Catalina Sky Survey teammate Josh Hogan was asteroid hunting in the constellation of Taurus with our 60 inch telescope on Mt. Lemmon, Arizona when he came across a very curious object. It has an orbit like an ordinary main belt asteroid. However, amazingly it has a tail extending some 19,000 miles out from a few mile diameter central object.

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2:01

276E-290-Screaming Aten

Travelers In The Night ·

2024/03/19

I knew from the short regularly space streaks on the four images I had just obtained with the Catalina Sky Survey's 60 inch on Mount Lemmon, Arizona, I was looking at the path of an Earth approaching object. Turns out, this previously unknown object, is an unusual Aten astrtoid in that its orbit is inclined 38 degrees to the path of the Earth around the Sun. It's high relative speed is caused by the fact that our paths intersect at a large angle making it similar to two vehicles coming together on

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2:01

788-!00 Years of Wilderness

Travelers In The Night ·

2024/03/15

In 1924 the Aldo Leopold Wilderness in southwestern New Mexico became the first designated wilderness and is an island from which to view the natural night sky. Today, because of inappropriate night lighting, the vast majority of children will never see the Milky Way, a meteor streaking across the sky, or have the opportunity to walk around at night by the light of the stars.

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2:01

275E-289-Strange Comet

Travelers In The Night ·

2024/03/12

C/2016 Q4 (Kowalski) is my Catalina Sky Survey teammate Richard Kowalski's 14th comet discovery. It orbits the Sun once every 68 years on a cold path between Saturn and Neptune.

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2:01

787-Far Out

Travelers In The Night ·

2024/03/08

In 2024, Voyager I is 163 times further from the Sun than we are and is the most distant, human made, traveler in the night.

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2:01

274E-288-Coming Out Of Monsoon

Travelers In The Night ·

2024/03/05

In the southwest, the life giving monsoon rains occur in July and August, divide the observing year into two halves, and give asteroid hunters a chance to do major equipment maintenance and upgrades. My Catalina Sky Survey teammates Richard Kowalski and Rose Matheny started the new observing season after the monsoon weather began to taper off using our 60 inch telescope on Mt. Lemmon and 30 inch Schmidt telescope on Mt. Bigelow respectively. Richard and Rose were given a three night clear break in

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2:01

786-Comet 31

Travelers In The Night ·

2024/03/01

My Catalina Sky Survey teammate Alex Gibbs discovered his 31st comet while asteroid hunting in Leo with our 60 inch telescope on Mt. Lemmon, Arizona. It orbits the Sun once every 6 years on a path between Mars and Jupiter. Comet P/2023/Y1 (Gibbs) is one on the 600 plus known members of the Jupiter family of comets.

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2:01

273E-286-Neighboring World

Travelers In The Night ·

2024/02/27

Astronomers at the European Southern Observatory in Chile have discovered a rocky Earth like planet orbiting Proxima Centauri, the star nearest to our Sun. The planet named Proxima b is about 1.3 times more massive than Earth, orbits it's dim red star every 11 days, and may always keep the same side towards it's sun. Attention grabbing is the fact that Proxima b is at the right distance from it's sun to allow for liquid water on it's surface.

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2:01

785-Secret Asteroid Mission

Travelers In The Night ·

2024/02/23

Unlike other space missions which are conducted out in the open the asteroid mining company AstroForge’s first mission to a potentially valuable nearby rocky M type asteroid is being planned in secret so that some other company doesn’t have the chance to grab it before they do.

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2:01

272E-285-Mars Impactors

Travelers In The Night ·

2024/02/20

In 2015 the Earth was struck by at least 43 meteoroids which created bright fireballs. Their arrival does not seem to be correlated with the position of the Earth in it's orbit about the Sun.Overall a given piece of ground on Mars is several times more likely to be hit by a space rock than is a similar sized area on Earth.

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2:01

784-Josh's Two PHAs

Travelers In The Night ·

2024/02/16

So far asteroid hunters have discovered approximately half of the 5,000 PHAs which are likely to exist. Asteroid hunters will continue to search the sky to discover dangerous asteroids 50 years before impact so that humans can either deflect or pulverize them.

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2:01

271E-284-Dark Trails

Travelers In The Night ·

2024/02/13

A faint shooting star or meteor streaking across the sky is produced when a tiny bit of rock or dust enters the Earth's atmosphere and burns up some 60 miles above us. NASA scientist Dr. Marc Fries and his collaborators have used Doppler Weather Radar to track twenty meteor's dark trails through the sky. In the past year or so they have used this technique to direct searchers on the ground to the probable location of freshly fallen meteorites.

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2:01

783--Kacper's Centaur

Travelers In The Night ·

2024/02/09

Centaurs have long puzzled astronomers since they have traits in common with both asteroids and comets.

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2:01

270E-283-Micro-Astronomy

Travelers In The Night ·

2024/02/06

The history of our spot in the Universe is written in the composition of meteorites and other samples of materials we have obtained from space. Even the smallest speck has a story to tell.

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2:01

782-Probing The Cosmic Web

Travelers In The Night ·

2024/02/02

In the past two decades astronomers have discovered that galaxies are not randomly distributed in space but rather occur along filaments of mass with huge empty voids between them. How objects and structures in the early Universe became nearby clusters of galaxies and third generation stars like our Sun is an evolving picture we are beginning to understand.

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2:01

269E-281-Starlight Walking

Travelers In The Night ·

2024/01/30

We don't know much about our Ethiopian ancestor Lucy who walked the Earth some 3 million years ago, however, it is likely that she made her way around at night but the light of the stars, air glow, and the Moon. In modern humans, the Rod receptors in our eyes become amazingly sensitive when they are not exposed to bright light for some 30 to 45 minutes. At this point things look black and white even though your eye's maximum sensitivity is close to the color of the green light given off by

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1,271 results

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