The 365 Days of Astronomy 365DaysOfAstronomy.org

How does length contraction work in relativity? Do moving objects really get shorter? What about from their perspective? How are we supposed to make sense of any measurement? I discuss these questions and more in today’s Ask a Spaceman!
 
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Hosted by Paul M. Sutter.
 
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=ejRSh9OzD8U
Streamed live on Jun 10, 2024.
Astronomers have discovered thousands of exoplanets, revealing entirely new types of worlds that we just don’t have in the solar system. It’s enough to start getting a rough sense of what kinds of planets are out there. What’s the big picture?
 
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org
Today's 2 topics:
- More than 240 Lunar meteorites have been found in the Dhofar region of Oman, on the LaPaz Icefield of Antartica, and other locations on the Earth's surface. These space traveling rocks were blasted from the Moon's surface by the impact of asteroids and comets which accelerated them to speeds greater than the lunar escape velocity of 1.5 miles per second. Subsequently these interplanetary travelers in the night orbited the Sun for an extended period of time before entering our atmosphere and falling to Earth. We know these meteorites are from the Moon because they contain mixtures of atoms which are found on the Moon but not in Earthly rocks.
- Recently in the space of 28 hours my Catalina Sky Survey teammates Rose Matheny and Carson Fuls discovered two Potentially Hazardous Asteroids to add to the list of the more than 1700 which asteroid hunters have discovered. Fortunately, none of the Potentially Hazardous Asteroids are currently on a collision course with planet Earth.
 
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://spacescoop.org/en/scoops/2320/magnetars-origin-story/
Far far away, in the constellation Monoceros, the unicorn, 3,000 light years away from us to be more exact, is an unusual star known as HD 45166. Which is preparing to become the most magnetic powerhouse known to exist in the Universe, a magnetar!
 
Magnetars are a type of neutron star that holds the record of the object with the strongest magnetic field in the cosmos. For a star to become a magnetar, astronomers initially thought that it had to be really massive. 
As it turns out, not quite so much, actually.
 
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From January 11, 2022.
China’s Chang’e-5 lunar lander has made the first in situ detection of water on the Moon, using reflectance spectroscopy from the surface of our natural satellite. Plus, all the news from the AAS virtual press conferences, including black holes and galaxies.
 
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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=wDNDz_VP3PE
From Nov 16, 2015.
The Moon is tidally locked to the Earth, which means that it always shows one face to our planet. In fact, this is the case for most the large moons in the Solar System. What's the process going on to make this happen?
 
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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!
http://cosmoquest.org/Donate This show is made possible through your donations. 
Thank you! (Haven't donated? It's not too late! Just click!)
------------------------------------
The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu
Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.