96: How Galaxies Get their Iconic Spirals

The astronomy and space science news podcast.*How galaxies get their iconic spiralsA new study claims galactic magnetic fields could play an important role in shaping the elegant sweeping arms of spiral galaxies like the Milky Way.*Best ever pulsar maps and measurementsAstrophysicists are literally rewriting and redrawing the textbook on pulsars after obtaining the most precise and dependable measurements of both a pulsar's size and its mass, as well as the first-ever map of hot spots on its surface.You tube video url: https://spacetimewithstuartgary.tumblr.com/post/189736850098  *US Space Force is now a thingU.S. President Donald Trump has formally signed the 2020 National Defense Authorization Act which officially establishes the United States Space Force as a new sixth branch of the American armed services. *Third AMS spacewalkCrew aboard the International Space Station have carried out the third of four planned spacewalks to service and upgrade AMS-02 – the Alpha Magnetic Spectrometer -- a device designed to capture cosmic rays and antimatter particles -- and to hunt for signs of mysterious dark matter. *India spy satellite launchIndia has launched a new spy satellite into orbit. *Third flight in a row for same Falcon 9 rocketSpaceX has successfully launched the new JCSAT-18/Kacific1 telecommunications satellite aboard a Falcon 9 rocket.You tube video url: https://spacetimewithstuartgary.tumblr.com/post/189713545878  *China’s space launch blitz continuesIt may be the end of year holiday season but China’s space blitz is continuing with the launch of two more BeiDou-3 navigation satellites followed by a new Sino-Brazilian Earth observation satellite. *Russia launches new navigation satelliteRussian space forces have launched a Soyuz-2.1b rocket carrying a Glonass-M navigation satellite into orbit. *The Science ReportNow impossible for the Earth not to increase average temperatures by two degrees in coming years.Research warns global warming makes it more difficult to predict year-to-year global climate variations.Excess salty water discharge from the Sydney Desalination Plant is attracting lots of fish. Eating ultra-processed foods linked to an increase risk of developing type 2 diabetes.How cats use marks on their ears to communicate.SBS wins Australian Skeptic’s 2019 bent spoon award for the worst pseudo-scientific piffle of the year. For enhanced Show Notes including photos to accompany this episode, visit: http://www.bitesz.com/spacetimeshownotes Get immediate access to over 170 commercial-free, double episode editions of SpaceTime plus extended interview bonus content. Subscribe via Patreon or Supercast....and share in the rewards. Details at www.patreon.com/spacetimewithstuartgary or if you’re not a fan of Patreon, go to Supercast - https://bitesz.supercast.tech/ RSS feed: https://feeds.megaphone.fm/spacetime Email: [email protected] To receive the Astronomy Daily Newsletter free, direct to your inbox...just join our mailing list at www.bitesz.com/mailinglist  See acast.com/privacy for privacy and opt-out information.Become a supporter of this podcast: <a...