Universe Today Podcasts With Fraser Cain

When we look outward into space, we’re looking backwards in time. That’s because light moves, at the speed of light. It takes time for the light to reach us. But it gets even stranger than that. Light can be absorbed, reflected, and re-emitted by gas and dust, giving us a second look. They’re called light echoes, and allow astronomers another way to understand the Universe around us. Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain /

There are few places in the Solar System which are as fascinating as Saturn’s moon Titan. It’s a world with a thicker atmosphere than Earth. Where it’s so cold that it rains ammonia, forming lakes, rivers and seas. Where water ice forms mountains. Like Europa and Encleadus, Titan could have an interior ocean of liquid water too, a place where there might be life. Titan’s got layers, and fortunately, there’s an awesome new mission in the works to explore it: the Titan Dragonfly mission. Links to episodes I mention: Drilling under the ice on Europa - https://www.youtube.com/watch?v=qxU1VSSka4M Everyday Astronaut talks about Titan Dragonfly - https://www.youtube.com/watch?v=JkS2dP7eiEU Missions to Titan - https://www.youtube.com/watch?v=rzg78ySwIn4 Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G

In this week's questions show, I explain how long it'll take for space junk to burn up in the Earth's atmosphere, would it be possible to put advertising in space, and why panspermia is appealing as a hypothesis. 01:04 When will the space junk return to Earth? 03:14 Why don't we clean up the junk? 06:50 Can we advertise in the night sky? 08:36 Why is pansperimia appealing as a hypothesis? 10:53 Crewed space station dedicated to astronomy? 13:25 Best way to reduce light pollution? 16:08 What factors are important for life? 18:41 Can a star and black hole orbit each other? 20:41 How does time dilation work? 24:46 What will happen if Starship works? 28:49 How do galaxies collide if everything is expanding? 30:10 Why are Saturn's rings fading away? Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week, and answer them here. Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: ht

As NASA prepares to return to the Moon by 2024 as part of its Artemis program, the agency is focusing its efforts on exploring the Moon’s polar regions. These are areas of the Moon which seem to have a lot of water mixed in with the regolith. Some of these craters are permanently in shadow, and might still have large quantities of water, that’s accessible to human and robotic explorers. This is a critical resource, and the Moon might be just the place to help humanity as it pushes out to explore the rest of the Solar System. But it might also be an illusion. We really won’t know until we look up close. Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.u

Where you can travel in space depends on how much propellant you’ve got on board your rocket and how efficiently you can use it. But there’s a source of free propellant right here in the Solar System - the Sun - which is streaming out photons in all directions. You just need to catch them. And right now, the Planetary Society’s new LightSail 2 spacecraft is testing out just how well it’ll work. Light Sail 2 Photos: http://www.planetary.org/blogs/jason-davis/lightsail-2-team-continues-tweaks-tests.html Episode on Breakthrough Starshot https://www.youtube.com/watch?v=3FWcEtXgK2g&list=PLbJ42wpShvml6Eg22WjWAR-6QUufHFh2v&index=146 Episode on Project Dragonfly https://www.youtube.com/watch?v=598UtgxFd1E&list=PLbJ42wpShvml6Eg22WjWAR-6QUufHFh2v&index=23 Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428Bc

In this week's QA, I tackle constant acceleration. Do we have anything that can accelerate at 1G for long periods of time? Why are there different sized stars? And do the heavier elements come from supernovae or colliding neutron stars? Check out Sophia on Twitter at: https://twitter.com/astropartigirl https://astropartigirl.com/ Traveling for billions of light years in a human lifetime https://youtu.be/4tjQ8o8j-O8 00:00 Continuous thrust at 1G? 02:25 How can bigger stars form? 03:56 Heavy elements from supernovae? 07:00 OWL versus E-ELT 09:34 Time dilation from living on Mars 12:55 Do Uranus' moons rotate around its equator? 14:38 Attach a telescope to ISS? 18:23 Terrified about the Sun 21:42 Do neutron stars turn into black holes 23:06 Why do astronomers call elements metal? 25:40 Can we find dark matter everywhere? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-aud

On October 19th, 2017 astronomers detected the first interstellar asteroid (or maybe comet) passing through the Solar System: Oumuamua. It had a brief encounter with the inner Solar System and then hurtled back out into interstellar space. Once astronomers noticed it, they directed the world’s telescopes on the object, but it was too far away to reveal anything more than a faint dot. Until now, we’ve only been able to study objects in our own Solar System. We have no idea what the rest of the Milky Way is like. But we were too late to catch it, no spacecraft was ready to make a quick intercept. Well, scientists aren’t going to make that mistake again. The European Space Agency announced their plans to build a comet interceptor. A spacecraft that will lurk out at the Earth-Sun L2 Lagrange point, waiting for a long-period comet or interstellar object to pounce on, and give us the first close up view ever. Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id

People are always worried that alien civilizations will detect the transmissions from our old radio shows and television broadcasts, and send in the invasion fleet. But the reality is that life itself has been broadcasting the existence of life on Earth for 500 million years. Blame it on the plants. In addition to filling the atmosphere with oxygen, plants give off a very specific wavelength visible in infrared radiation. It’s the kind of signal that other civilizations could search for as they’re scanning the galaxy. It’s what we’ll be looking for too. But don’t just blame the plants. Other forms of life have been giving off signals too, signals we can search for as we discover new exoplanets and wonder if they have life there. Information on ESA's ARIEL mission https://www.youtube.com/watch?v=uCTGIxmM-e4 Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://ww

In this week's QA, I answer why space telescopes aren't a waste of taxpayer resources, if ground-based space telescopes will become obsolete, and whether it makes sense to crash phobos into Mars. 00:18 Waste of taxpayer money? 02:14 Will ground-based telescopes become obsolete? 03:50 Crash Phobos into Mars 04:56 Should NASA collaborate with China? 05:45 Entanglement to communicate faster than light? 08:09 Crop circles 08:36 Problem with wearing a weight suit in zero gravity 09:55 Methane rocket emissions 10:57 Why does Titan have an atmosphere? 11:51 Harvest energy from neutrinos Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Sp

This past weekend Skylias moderated a debated between John Michael Godier and Fraser Cain over their Fermi paradox theories. If there are aliens where are they? The Fermi paradox theory asks where are the alien civilizations in the galaxy? And in the universe. If they exist. Where are the extraterrestrials? Website: https://www.eventhorizonshow.com/Support Universe Today Podcast

In this week's questions show, I explain how astronomers know what the Milky Way looks like, what would happen in a catastrophic impact on the International Space Station, and who is the team who works with me on Universe Today? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/u

The Solar System is a really big place, and it takes forever to travel from world to world with traditional chemical rockets. But one technique, developed back in the 1960s might provide a way to dramatically shorten our travel times: nuclear rockets. Of course, launching a rocket powered by radioactive material has its own risks as well. Should we attempt it? Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain / frasercain@gmail.com Kar

In this week's questions show, I explain why NASA decided to build James Webb and not more Hubble Space Telescopes, what would happen if you opened up a jar in space, and do we know of any stars without planets? 00:45 Why doesn't NASA build more Hubbles? 02:42 Where did life come from? 04:05 What if you opened a jar in space? 05:58 Why didn't I answer your question? 07:15 Will we give up all the sky? 09:06 Annoyed about light pollution. 10:28 Less satellites, higher up 11:41 Stars without planets? 12:25 Worth getting a degree in astronomy? 14:33 You can buy SpaceX stock 15:20 Do I really get death threats? 17:32 Can planets be independent from a galaxy? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G W

Explorers have always brought stowaways with them on board. Thanks to our travels around the world, hardy creatures like rats, goats, pigs and starlings and more have found their way to every corner of the globe. Not to mention our plants, microbes and viruses. Wherever we go, life goes with us, whether we want it to or not. And when we travel to other worlds, it looks like the most extreme life Earth has ever cooked up is ready and willing to make the journey with us. Now that the big flybys are over, it’s time to dig into the regolith, search for life in underground lakes and oceans, return samples back to Earth. We’re going to give life every opportunity to contaminate other worlds. What can we do to prevent it? Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https

In this week's penultimate episode of Open Space before our summer hiatus, I give tips and tricks on seeing Jupiter, what's a good starting telescope, updates on LIGO, why rockets launch straight up, and more... 00:00 Introduction 02:00 Looking at Jupiter 02:38 Starting Telescope 03:55 Why do rockets launch vertically first? 05:04 How much should a telescope cost? 05:48 What has LIGO been seeing? 08:15 How bad is the radiation around Jupiter? 10:20 What do I think about the Lunar Gateway 13:17 Drilling into Europa 14:29 Will ISS have a successor? 16:19 Probe to Uranus/Neptune? 18:02 Why do a crewed mission to Venus? 19:39 Updates on Project Starshot? 22:30 Does light stop travelling? 23:30 What kind of transmission would come from Alpha Cen. 25:13 Ethical issues of asteroid mining 26:55 Why haven't we done rotating habitats in orbit? 31:35 Could dark matter turn into planets? 33:26 Moon base in 50 years? 35:50 Lots of people living in space by 2100? 37:14 Moon mining? 39:56 Books in any order? 40:30 When will

In this week's live QA episode, I tackled questions about the reality of returning astronauts to the Moon by 2024, the loss of dark skies, will we ever be able to shop for our own personal spacecraft, and more. 01:00 Our hiatus 04:40 Can we really return to the Moon by 2024? 09:05 Dark sky controversy 10:28 Is it hard to stay fascinated about astronomy? 13:44 Will space travel ever be like air travel? 15:49 Didn't Trump say they weren't going to the Moon any more? 17:54 Did extraterrestrial visited our planet in the past? 19:57 Where can you get my new poster? 20:55 What is the most important invention? 23:33 If I was captain of a starship, where would I go? 24:15 Any merch? 25:40 Will we shop for personal spacecraft? 27:05 Is something looking back at us? 27:50 When will Starlink be available? 30:05 Star Trek, Star Wars or Rick and Morty 30:48 What about space elevators? 34:07 Will space planes ever be viable? 35:36 Can't they use robots to fix Hubble? 37:41 Why aren't ion engines used more often? 40:32 Woul

Here's my interview on Space Junk about the Fermi Paradox: https://anchor.fm/spacejunk/episodes/The-Fermi-Paradox-and-The-Great-Filter-w-Fraser-Cain-e44uff 00:29 Are rings only limited to gas giants? 02:30 If we blocked the light on Venus, would it cool down? 04:34 What would it take to build a generational ship? 06:20 Do airplanes avoid telescopes? 08:16 Examples of reused spacecraft designs. 10:17 Could we breath an alien atmosphere? 12:02 How do they evacuate ISS? 13:21 What is the cost of the Hubble Space Telescope? 15:12 Are we unique in the Universe? 17:10 Can't astronauts wear weights? 18:37 Research into weaponizing asteroids? 20:23 Dig caverns on the Moon or Mars? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd4

Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain / frasercain@gmail.com Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - weber.chad@gmail.com References: https://www.dlr.de/me/en/desktopdefault.aspx/tabid-1752/2384_read-54290/ http://eea.spaceflight.esa.int/attachments/spacestations/ID5c643608ee7a9.pdf https://www.youtube.com/watch?v=STUyjTO8gQwSupport Universe Today Podcast

00:28 Why is Starlink so bright? 02:52 Should Starlink provide internet access? 07:02 How do chemical thrusters work in a vacuum? 07:50 Sgr A* is pretty cool? 09:09 Launch providers should provide a discount for science 10:16 Could Starlink satellites do science too? 12:50 Will corporations and governments surveil us? 14:45 Am I using a green screen 15:47 Can Starlink be blocked? 18:21 Worried about space junk? 18:40 Should you invest in SpaceX? 20:00 Should we trust Elon Musk? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: https://www.youtu

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