Odyssey: Planet Nine: Does it Exist?

How many planets are there in our solar system? The answer, of course, is nine! But why nine? In 2006, Pluto was demoted to a dwarf planet status leaving only eight. Why is nine still a good number? Just last year astronomers found evidence that there may be a new planet with which to replace Pluto. They can't even see this planet so why replace Pluto with a planet they can't see? And if they can't even see it, how do they know it's there? Currently, there are stories about another Earth-sized planet in an orbit identical to Earth's but blocked from our view by the sun. Could it really be there? In this six-week series we will explore our solar system and its planets, using a little physics from Galileo, Newton, and Einstein, and show how their theories led to our understanding of the creation of the universe and our solar system.

914.581.01 Homewood Campus Wednesday, March 8 to April 12, 7 to 8:30 p.m. Cost: $150 (six sessions)

JHU full-time faculty/staff are eligible for 80% remission. You will be unable to register online and receive the discount. Contact 410-516-8516 for more information.