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Distant Visitor
Manage episode 516250515 series 178791
Content provided by McDonald Observatory and Billy Henry. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by McDonald Observatory and Billy Henry or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.
A visitor from far beyond the solar system is getting better acquainted with the Sun this week. Tomorrow, it’ll make its closest approach to the Sun – just 126 million miles. After that, it’ll head back toward interstellar space.
The visitor is 3I/ATLAS. It was discovered on July 1st by an automated telescope that looks for comets and asteroids. Calculations of its orbit quickly showed that it came from outside the solar system. That makes it the third known visitor from interstellar space.
It originated in the galaxy’s “thick disk.” That’s a region that sandwiches our part of the disk. It contains stars that are far older than the Sun. Estimates say 3I/ATLAS could be three billion years older than the solar system, so it could preserve a chemical record of an earlier era in galactic history.
3I/ATLAS is a comet – a ball of rock and frozen gases a few miles in diameter. As it’s closed in on the Sun, some of its gas has vaporized, releasing bits of dust as well. Observations will reveal the composition of this material, telling astronomers about conditions in the region where it formed.
Unfortunately, astronomers can’t see 3I/ATLAS at all right now – it’s hidden in the Sun’s glare. It’ll return to view in December – but only when viewed through a telescope. It’ll pass closest to Earth on December 19th – almost 170 million miles away.
Script by Damond Benningfield
3038 episodes
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Manage episode 516250515 series 178791
Content provided by McDonald Observatory and Billy Henry. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by McDonald Observatory and Billy Henry or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.
A visitor from far beyond the solar system is getting better acquainted with the Sun this week. Tomorrow, it’ll make its closest approach to the Sun – just 126 million miles. After that, it’ll head back toward interstellar space.
The visitor is 3I/ATLAS. It was discovered on July 1st by an automated telescope that looks for comets and asteroids. Calculations of its orbit quickly showed that it came from outside the solar system. That makes it the third known visitor from interstellar space.
It originated in the galaxy’s “thick disk.” That’s a region that sandwiches our part of the disk. It contains stars that are far older than the Sun. Estimates say 3I/ATLAS could be three billion years older than the solar system, so it could preserve a chemical record of an earlier era in galactic history.
3I/ATLAS is a comet – a ball of rock and frozen gases a few miles in diameter. As it’s closed in on the Sun, some of its gas has vaporized, releasing bits of dust as well. Observations will reveal the composition of this material, telling astronomers about conditions in the region where it formed.
Unfortunately, astronomers can’t see 3I/ATLAS at all right now – it’s hidden in the Sun’s glare. It’ll return to view in December – but only when viewed through a telescope. It’ll pass closest to Earth on December 19th – almost 170 million miles away.
Script by Damond Benningfield
3038 episodes
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Similar to StarDate
How many organs could you donate and remain alive? How many planet Earths could fit inside the Sun? How high is a giraffe's blood pressure? Why is the sea blue? To find out, Ask The Naked Scientists!
…
continue reading
Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (Planetary Science Institute), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us. Astronomy Cast is supported thru patreon.com/AstronomyCast.
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We take a critter’s eye view to explore how animal behavior parallels humans. Join comedians and science-lovers as we get inside the minds of animals
…
continue reading
I discuss a variety of topics in both the natural and social sciences, exploring the many fascinating insights that the scientific method yields about the world around us.
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continue reading
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continue reading
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