Highest-energy Cosmic Ray // Io's Volcanic Activity // December Skywatch | S26E147

<b>The Space News Podcast.</b><br /><b>SpaceTime Series 26 Episode 147</b><br /><b>*Detection of one of the highest-energy cosmic ray ever</b><br />In 1991, the University of Utah Fly’s Eye experiment detected the highest-energy cosmic ray ever observed. Then on May 27, 2021, the Telescope Array experiment detected what is now the second-highest extreme-energy cosmic ray ever recorded and the source is still a mystery. <br /><b>*Pinpointing the source of Io's volcanic activity</b><br />A new study suggests that most of the Jovian Moon Io’s tidal, heating is concentrated within its upper mantle. <br /><b>*Ariane 6 successfully completes its hot-fire test</b><br />The European Space Agency's new Ariane 6 rocket has successfully completed a key engine firing test in preparation for next year’s maiden flight. <br /><b>December Skywatch</b> The December solstice, the ticking time bomb that is Eta Carinae and the rock comet Phaethon are among the highlights of the December night skies on SkyWatch<br /><br />Listen to SpaceTime on your favorite podcast app with our universal listen link: <a href="https://spacetimewithstuartgary.com/listen" target="_blank" rel="noreferrer noopener">https://spacetimewithstuartgary.com/listen</a> and access show links via <a href="https://linktr.ee/biteszHQ" target="_blank" rel="noreferrer noopener">https://linktr.ee/biteszHQ</a><br />For more SpaceTime and show links: <a href="https://linktr.ee/biteszHQ" target="_blank" rel="noreferrer noopener">https://linktr.ee/biteszHQ</a><br /><br />This show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at <a href="https://www.spreaker.com/show/2458531/advertisement">https://www.spreaker.com/show/2458531/advertisement</a>