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Travelers In The Night
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Travelers In The Night

Author: Dr. Al Grauer

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Space, Asteroid Hunting, and Astronomy, an insider view.

The music is "Eternity" by John Lyell.

Astronomy Asteroids Space NASA Comets Earth Impact
803 Episodes
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658-Fireball II(418)

658-Fireball II(418)

2021-09-1702:01

Recently there were four fireball meteors, brighter than the planet Venus, which exploded over Germany, France, Ohio, and Arizona within the space of only 10 hours. There are likely to be on the order of 1,000 fireball events over the Earth every day.
146E-158-Know A Star

146E-158-Know A Star

2021-09-1402:01

How would you like to know more about a particular star than anyone else on Earth?
On Earth, human life is enabled by plants which provide us with calories, vitamins, fuel, medicines, and oxygen to breathe. In addition, recent scientific studies indicate that plant cultivation reduces anxiety and depression and has a positive influence on diabetes, heart disease, obesity, and longevity. It is likely that when humans travel to Mars they will continue this practice. The plants that Mars explorers take with them will provide a source of fresh fruits and vegetables , fresh air to breathe, and perhaps a psychological benefit that is crucial to the success of their mission.
145E-157-Kissing Frogs

145E-157-Kissing Frogs

2021-09-0702:01

An asteroid hunter literally has to sort through millions of objects to find an unknown Earth approaching asteroid.
The largest asteroid to come near the Earth in 100 years has two moons.
144E-156-Close Ones

144E-156-Close Ones

2021-08-3102:01

In the space of less than ten nights, my Catalina Sky Survey teammates discovered 8 new Earth approaching objects. One of them can pass closer to us than our communication satellites.
Finding a meteorite that has traveled billions of miles through space to reach it's present location is exciting. It might even be worth real money.
143E-155-Full Moon

143E-155-Full Moon

2021-08-2402:01

For some people the full Moon is for howling. For asteroid hunters it is time to regroup and make improvements in the process of finding Earth approaching objects.
654-Night Vision(401)

654-Night Vision(401)

2021-08-2002:01

Experience the wonders of the Universe first hand using your night vision.
Soon it will be possible to study changes in the Universe which have occurred over the past 100 years. Photo: By Harvard College Observatory - Harvard College Observatory, Public Domain, https://commons.wikimedia.org/w/index.php?curid=5280391
653-Biggest Ear(300)

653-Biggest Ear(300)

2021-08-1302:01

China has built and is operating the world's largest Radio telescope.
The most likely alien invaders are viruses or other bits of living materials that humans have exported from or imported to Earth's biosphere. Currently there are international efforts, like the outer space treaty and the Committee on Space Research, to keep the human exploration of space from spreading Earth's life forms to other places or to contaminate our own biosphere with extraterrestrial organisms if they exist.
652-Our Number(314)

652-Our Number(314)

2021-08-0602:01

My Catalina Sky Survey teammate Greg Leonard discovered, 2016 WJ1, a relatively large asteroid which can come close but will not hit the Earth. Once in every million years or so an asteroid impact by an object of this size could cause global climate change disrupting human agriculture and plunge our society into a real crisis.
140E-152-Big and Bad

140E-152-Big and Bad

2021-08-0302:01

n the space of a couple of days the Catalina Sky Survey found 3 potentially dangerous asteroids.
Large asteroids which impact the Earth can cause global change.
650-Jupiter(396)

650-Jupiter(396)

2021-07-2302:01

Jupiter has been observed throughout human history and is so bright that you can even spot it under the artificial light dome of one of our cities. Even so it is less than 40 years ago that we were first able to view Jupiter in detail as the Voyagers streaked by it. Jupiter contains more than twice the mass of all of the other planets, dwarf planets, asteroids, and comets in our solar system combined.
138E-150-How Big It Is

138E-150-How Big It Is

2021-07-2002:01

Asteroids are moving points of light in the night sky, which shine by reflected Sun light. The asteroid hunting community determines a new object's orbit around the Sun by continuing to measure its changing position in the sky. The next time you hear someone state the size of an asteroid it is a safe bet that it based on Dr. Landolt's Standard Star measurements.
649-30 Days of Traffic

649-30 Days of Traffic

2021-07-1602:01

During a recent 30 day period asteroid hunters spotted 88 small space rocks passing through our neighborhood. Their diameters ranged from the length of a Uhaul Van to one that would occupy the majority of a city block. None of them pose a threat to Earth in the foreseeable Future.
About a month before my Catalina Sky Survey teammate Rik Hill spotted it, a 5 football field diameter asteroid had been almost as near to the Sun as the planet Venus. His discovery images showed it about to cross the Earth's orbit at a speed of 21 miles per second coming towards us. Additional observations by telescopes in Illinois, New Mexico, and Arizona showed that its 7.6 year path around the Sun will take it out to well past the planet Jupiter. This object's orbit is highly elliptical and inclined so that it moves above and below the plane where the planets and nearly all of the other solar system objects exist. It had crossed the Earth's orbital path moving towards the Sun about 6 weeks before it was discovered but nobody noticed it since it was faint and far away from Earth.
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