There’s a good case to make that without the huge planet Jupiter standing guard 483 million miles from the sun, life on Earth — or even Earth itself — might never have gotten started.Today’s show is brought to you by Squarespace. Start building your website today at Squarespace.com. Enter offer code UNIVERSE at checkout to get 10% off. Squarespace – Build it Beautiful.Today's episode is also sponsored by Audible.com. Audible has over 180,000 audio books and spoken word audio products. Get a free 30 day trial at audible.com/UNIVERSE