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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

690-Peek A Boo Asteroid(468)

Travelers In The Night ·

2022/04/29

A strange asteroid plays hide and seek with frustrated astronomers.

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2:01

178E-190-EX Most Dangerous

Travelers In The Night ·

2022/04/26

For a week or so after its discovery by the 3.5 meter Space Surveillance Telescope, 2015 PU228 was thought to be the asteroid most likely to collide with Earth in this century. Calculations based on limited data indicated that this asteroid had a one in 23,000 chance of colliding with our planet in January of 2081. As the length of 2015 PU228's observed path in the sky grew its chances of a collision with Earth decreased. More than a month's observations has made us sure that it will completely miss

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2:01

689-Botswana Bound(471)

Travelers In The Night ·

2022/04/22

A small space rock with a diameter less than the height of an NBA basketball player had just crossed the orbit of our Moon on a collision course with Earth when it was spotted streaking through the constellation of Scorpius by my Catalina Sky Survey teammate Richard Kowalski. 8 hours and 37 minutes after Richard's discovery observations, the space rock now known as 2018 LA was seen by security cameras to explode over Botswana in southern Africa just as NASA's scout system predicted.

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2:01

177E-189-Thats 2

Travelers In The Night ·

2022/04/19

Gennadii Borisov has done it again. In a stretch of less than six weeks this talented observer and telescope maker discovered two interesting Earth approaching objects. In this age of big science it is gratifying to see that an individual with relatively modest equipment can make scientific discoveries. In this case Borisov beat my team the Catalina Sky Survey and the Pan-STARRS group in Hawaii with our large telescopes and powerful computer systems to the discovery of a significant object.

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2:01

688-Martian Asteroid Hunters(470)

Travelers In The Night ·

2022/04/15

The life of an asteroid hunter on Mars will be interesting and exciting. The double planet, our Earth and Moon, in the Martian night sky will be an unforgettable sight and well worth the trip.

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2:01

176E-188-Deep Listen

Travelers In The Night ·

2022/04/12

There is a mind blowing potential for life in the Universe. Humanity's ignorance of any life forms beyond Earth has prompted the Breakthrough Prize Foundation at the Royal Society in London to create a program to award 100 million dollars in grants to fund projects to search for signals from intelligent life.

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2:01

687-Returnee(465)

Travelers In The Night ·

2022/04/08

After being lost for ten years, the asteroid 2010 WC9 was re-discovered about a week before it came very close to Earth.

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2:01

175E-187-Ganymede's Layers

Travelers In The Night ·

2022/04/04

You can spot Ganymede orbiting the planet Jupiter with any backyard telescope. It is the largest of the four bright moons of Jupiter discovered by Galileo Galilei in 1610. In your telescope Ganymede will be the third farthest moon from Jupiter. This tiny point of light is really a small world composed of ice, water, and rock.

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2:01

686-Big Atira(464)

Travelers In The Night ·

2022/04/01

The recent discovery of an asteroid, whose orbit lies completely within that of the Earth, reminds asteroid hunters to continue to search near the Sun so that a large dangerous object does not sneak up undetected on the residents of planet Earth.

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2:01

174E-186-Breaks Happen

Travelers In The Night ·

2022/03/29

Hunting asteroids by poking around in clear holes between cloud layers can be very tiresome, however, sometimes it has its rewards. A break in the monsoon weather pattern over southern Arizona allowed my Catalina Sky Survey Teammate, Richard Kowalski, to discover four new Earth approaching objects during the part of a night it was clear.

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2:01

685-Exiled Asteroid(463)

Travelers In The Night ·

2022/03/25

An asteroid is exiled to the outer regions of the solar system during Jupiter's rampaging tack away from the Sun long ago. During that process enough material was left in Jupiter's wake to form Venus, Earth, Mars, and the asteroid belt as we know them today.

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2:01

173E-185-So Many Possibilities

Travelers In The Night ·

2022/03/22

The number of possible places in a galaxy for life as we know it to develop depends on the number of stars which have planets, the presence of necessary elements such as iron, oxygen, nitrogen, and carbon, and the freedom from nearby supernova which could sterilize an otherwise habitable planet. The good news, the Sloan Digital Sky Survey in New Mexico has reported the discovery more than 150,000 galaxies which are rich with the three life enabling properties. The bad news is we will get monologues

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2:01

684-Our View(462)

Travelers In The Night ·

2022/03/18

Modern technology provides us with stunning views of objects in the Universe in wavelengths invisible to our eyes, however, nothing is as moving and thought provoking as looking into deep space with your very own eyes.

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2:01

172E-183-No Worries

Travelers In The Night ·

2022/03/15

A number of blogs and postings on the web have been spreading the false rumor that there is an asteroid which is about to strike the Earth producing catastrophic damage. There are also recurrent false rumors that the government or governments are hiding the fact that a catastrophe is about to occur. Neither of these has a shred of evidence to back them up.

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2:01

683-TESS(460)

Travelers In The Night ·

2022/03/11

To find planets close to home NASA has launched TESS the Transiting Exoplanet Satellite which will monitor more than 200,000 nearby, stars over the entire sky to detect the tiny dips in light caused when a planet passes in front of it's star. The TESS era will be a most exciting time as humans discover and are able determine the properties of relatively nearby habitatable worlds and dream about what might be living in our neighborhood of the Milky Way.

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2:01

171E-184-Most Dangerous

Travelers In The Night ·

2022/03/08

Recently the 3.5 meter Space Surveillance Telescope located at the White Sands Missile Range in New Mexico found an an asteroid which has been named 2015 PU228. It is currently the asteroid which is most likely to collide with planet Earth in this century. Don't worry, its closest approach to our home planet will not be untill January 15, 2081. If there is an ideal close approaching asteroid, 2015 PU228 is it. Humans have discovered this object long before it comes near to our home giving plenty

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2:01

682-Falling Space Rocks(459)

Travelers In The Night ·

2022/03/04

n the early evening of January 17, 2018 six hundred and seventy four observers in 11 States and Canada reported a fireball meteor streaking across the sky to the American Meteor Society. To find freshly fallen meteorites visit the American Meteor Society's website but do not hunt for meteorites on private land without permission.

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2:01

170E-182-Earth Life On Mars

Travelers In The Night ·

2022/03/01

If Earth had a mountain about four times higher than Mt. Everest this hypothetical mountain's summit would have the thin atmosphere, UV radiation from the Sun, and the temperature extremes approaching the hostile environment to be found on the planet Mars.

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2:01

681-17,000 to Go(455)

Travelers In The Night ·

2022/02/25

So far asteroid hunters have discovered about 8,000 of the 25,000, large, potentially hazardous asteroids, suspected to exist, leaving 17,000 more to be found. For this reason, NASA has designed and proposed the NEOCam spacecraft to give us the ability to find them before they find us.

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2:01

169E-181-Beyond Moon

Travelers In The Night ·

2022/02/22

The relentless pull of the Earth's gravity on the Moon causes it to always point the same side towards us. The Moon's slight wobble has allowed us to catch glimpses of a small sliver of the Moon's far side. In 1968 the first humans to see the far side with their own eyes were the astronauts of Apollo 8. Perhaps someday humans will put a base on the far side of the Moon where powerful telescopes would be unaffected by light and electronic noise from Earth.

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1,271 results

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