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Travelers In The Night: Daily Summaries Delivered
by 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.
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- Yesterday2 min
925-Farming Martian Soil
Humans are dreaming and planning settlements on Mars. There are ice deposits which with solar power could be used to produce oxygen to breathe, water to drink, and hydrogen and oxygen to fuel vehicles of all sorts. Food remains a challenge since the Martian soil contains poisonous perchlorate salts that can harm human health if absorbed by crops, has no organic material, and when wet can pack down like concrete making it difficult for plant roots to grow. Please don’t take the environment we have on Earth for granted.
- 4 days ago2 min
414E-456-Dangerous Trio
In the space of only four days, my Catalina Sky Survey teammates, Brian Africano, Alex Gibbs, and Greg Leonard, discovered three Potentially Hazardous Asteroids. Searching for such a large space rock on an impact trajectory with planet Earth is what keeps my team, the Catalina Sky Survey, going to our four telescopes, 24 nights per month, when the moon isn't too bright, in the Catalina Mountains north of Tucson Arizona.
- 1 weeks ago2 min
924-Alessandra's Impactor
My Catalina Sky Survey teammate Alessandra Serrano was asteroid hunting in the constellation of Cetus with our 60 inch telescope on Mt. Lemmon, Arizona when a rapidly moving unknown object streaked through a set of her images on its way to impact Earth.
- 1 weeks ago2 min
413E-454-Comets And Asteroids
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.
- 2 weeks ago2 min
923-From Alpha Centauri Star With Love
A fascinating research paper suggests the possibility that there is an exchange of chemical elements, organic molecules, and potentially life’s precursors between star systems. Could it be possible that microorganisms or complex organic molecules could hitch a ride inside rocky meteorites ejected from a living planet? If so living organisms in our neighborhood of the Milky Way might be related to each other.
- 2 weeks ago2 min
412E-453-HAMMER
Theoretically, If an asteroid on a collision course with our planet could be slowed sufficiently it could be made to pass behind our planet as it orbits the Sun.
- 3 weeks ago2 min
922-Earth Impactors from Vera Rubin
The Vera C. Rubin Observatory, also known as LSST, with its 8.4 m mirror, the width of a tennis court, and the worlds largest 3.2 gigapixel camera, roughly the size of a small car, will image the entire sky every 3 or 4 nights in such a way as to detect objects that change in position and/or brightness. It is estimated the LSST will discover one or two new impacting small asteroids per year and provide several days of lead time for follow up telescopes to track an impactor into the atmosphere to find meteorites whose chemical composition will tell us about where they originated.
- 3 weeks ago2 min
411E-452-Small But Deadly
My Catalina Sky Survey teammate Greg Leonard's discovery of, 2018 FO5, a three football field diameter asteroid that can come closer than our Moon is a reminder that we need to keep searching for the many thousands of Potentially Hazardous asteroids larger than 500 feet in diameter which are likely to exist.
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About Travelers In The Night
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.
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