Dr. Meridith Joyce of Australian National University joins us on the  show, talking about her new finding showing that the red giant star Betelgeuse is both smaller and closer than we believed.   We'll also take a look at the OSIRIS-REx spacecraft, which touched down  last week on the surface of the asteroid Bennu. We examine a  new study identifying 1,000 worlds where extraterrestrial astronomers  could – theoretically –  easily see signs of life on Earth. Also, one  exoplanet the size of Neptune is found orbiting far too close to its  parent star. And we take a look at findings from the ALMA network of  radio telescopes, revealing the role volcanoes play in forming the  atmosphere of Io, one of the largest moons of Jupiter.--- Send in a voice message: https://anchor.fm/the-cosmic-companion/messageSupport this podcast: https://anchor.fm/the-cosmic-companion/support Get full access to The Cosmic Companion at thecosmiccompanion.substack.com/subscribe