May 2007 ASTRONOTES Incorporating FRIENDS' NEWSLETTER Kepler: Astronomy Great Risky Business Slow Lane to the Planets Giants and Dwarfs of the Cosmos Holiday with the Stars ARMAGHPLANETARIUM 2 Astronotes May 2007 Astronomy Greats: Kepler By Naomi Francey, Education Support Officer Visitors to the Planetarium may be curious about the names of our rooms. ... Kepler's elliptical orbit law: The planets orbit the sun in elliptical orbits with the sun at one focus. ... Nothing in space is standing still. ...