A capsule from the NASA spacecraft, Osiris-REx recently landed in a Utah desert after spending seven years in space. Inside the capsule is a sample from a more than 4 billion year-old asteroid named, Bennu. And it could answer some of the biggest questions about our existence.The Globe’s Science Reporter, Ivan Semeniuk is on the show to tell us about why this mission is so important and what this asteroid might tell us about how our solar system was formed and what exactly makes earth habitable.Questions? Comments? Ideas? Email us at thedecibel@globeandmail.com