Ivan Semeniuk ("Anuli Bellus - The Cassini Mission Report", Main Tent, Saturday 1:30 p.m.) is a science journalist specializing in astronomy and space science. He is a columnist and producer for Discovery Channel's popular science show, Daily Planet, and a contributing editor to SkyNews. His feature articles have appeared in The Globe & Mail, Astronomy, Sky & Telescope and NewScientist magazine.

What happens when the biggest planetary mission in history encounters the most striking planet "in the solar system?" The results will be the subject of this up-to-the-minute account of Cassini's long-anticipated arrival at Saturn.