A group of Southern Illinois University students, staff and faculty are heading to Australia for a solar eclipse on April 20 of this year. The 21st was joined by one of the professors heading Down Under for this research.

Guest: Neil deGrasse Tyson.

How did the universe begin? It's a question that plagued scientists for centuries, and one that astrophysicist Neil deGrasse Tyson explores in his recent book Origins: Fourteen Billion Years of Cosmic Evolution. He joins us on Focus today to discuss the formation of the universe, as well as its galaxies, planets... and inhabitants.

Guest: Neil Comins.

One of the biggest paradoxes of modern science is that the more we discover about the natural world, the more we come to understand that our everyday perceptions of it are incorrect. Physicist Neil Comins joins Focus today to talk about his new book Heavenly Errors, in which he identifies numerous misconceptions about the universe and addresses the errors in these lines of thought.