Ask A Spaceman Ep. 226 - Does the Universe Get Shorter When You Go Faster?
Release Date: 06/18/2024
The 365 Days of Astronomy
Staying alive… Dear Cheap Astronomy – Just how useful are humans in space? Just by landing robots on Mars, we’ve been able to take lots of photos, smell the air, feel the ground and listen to the wind blow. We’ve got bogged in difficult terrain, but also climbed hills to take in the view and even operated a drone. Sending people there is a lot more fraught… Dear Cheap Astronomy – What is the death zone radius of a black hole merger? The background to this question is the gravitational wave data we’ve been detecting with LIGO – the Laser Interferometer Gravitational Wave...
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From Aug 15, 2023. Tucked inside a quiet solar system, in the area of sky outlined by the constellation Aquarius, orbits a planet named TRAPPIST-1d, the third of seven planets in a system positioned 41 light years from our vantage point. TRAPPIST-1d is a rocky, Earth-like planet, meaning that it is roughly the same size and mass as our home. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every...
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Streamed live Jun 20, 2024. Fraser & Pamela list their favorite books! Take notes! I also have a favor to ask - I'm working on a research project with my collaborator Sanlyn Buxener on what factors help and hinder people learning and doing science. Can you please take our survey? THANK YOU! - Pamela Join our Patreon: This video was made possible by the following Patreon members: - BogieNet - Stephen Veit - Jeanette Wink - Siggi Kemmler - Andrew Poelstra - Brian Cagle - David Truog - Ed - David - Gerhard Schwarzer THANK YOU! - Fraser and Dr. Pamela We've added a new way to donate...
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Dr. Al Grauer hosts. Dr. Albert D. Grauer ( ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. From Feb 24 & May 3, 2023. Today's 2 topics: - Recently, my Catalina Sky Survey teammate Hannes Groller discovered an Earth approaching asteroid which has a speed consistent with it being ejected from the Moon by the impact of an asteroid or comet long ago. 69 hours after Hannes discovered it, this small space rock passed closer than the communication satellites are from us. - During Comet C/2018 V4 Africano's last visit...
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Hosted by Dr. Jacinta Delhaize & Dr. Daniel Cunnama. From June 21, 2022. In this week’s episode, Jacinta and Dan take a step back to review the past year of The Cosmic Savannah podcast. We chat about some of the highlights of the past year in astronomy and also some of our favourite episodes of the season. We discuss some of the great astronomical discoveries, milestones and events from the past year, including the green light for the Square Kilometre Array construction, the launch of the James Webb Space Telescope and another incredible result from the Event Horizon Telescope!...
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From June 5, 2024. In this episode, we bring you stories on how JWST - Not LIGO and Virgo - spotted the most distant Black Hole merger to date, why the search for life on other worlds gets more challenging the more we look, and we take a deep dive into the things we’re doing that cause and relieve climate change. We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you!...
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Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. Chris and Shane welcome guests Adam Firth and Steve Wallace to talk about the Sherwood Planetarium project. More details can be found at We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs. Just visit: and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too! Every bit helps! Thank you! ------------------------------------ Do go visit for cool Astronomy Cast and CosmoQuest t-shirts,...
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Checking out the neighbors. Dear Cheap Astronomy – Is solar or nuclear better for a future Mars base? A common theme on Cheap Astronomy, with regards to space exploration is that just because we can do it, doesn’t mean we will do it, since any billion dollar investment is going to require some kind of return on investment, whether that be an actual monetary return or political capital, or whatever. And even then, if there’s a major risk of people dying and/or the mission failing, it probably won’t get off the ground in the first place. Dear Cheap Astronomy – Can we look...
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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! This episode is sponsored by BetterHelp. Give online therapy a try at and get on your way to being your best self. Visit BetterHelp to get 10% off your first month! Support the show: All episodes: Follow on Twitter: Read a book: Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to...
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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? This Episode is made possible thanks to our Patrons on Patreon. Join at the Galaxy Group level or higher to be listed in our YouTube videos. This video was made possible by the following Patreon members: - BogieNet - Stephen Veit - Jeanette Wink - Siggi Kemmler - Andrew Poelstra - Brian Cagle - David Truog -...
info_outlineHow 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!
This episode is sponsored by BetterHelp. Give online therapy a try at betterhelp.com/spaceman and get on your way to being your best self. Visit BetterHelp to get 10% off your first month!
Support the show: http://www.patreon.com/pmsutter
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Hosted by Paul M. Sutter.
We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.
Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can!
Share the podcast with your friends and send the Patreon link to them too!
Every bit helps! Thank you!
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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 [email protected].