NASA Science Mission Directorate January 2009
Go Observe with NASA - Venus
NASA & Galileo Facts
NASA Hot Topic Telescopes and Space Probes: Today’s Starry Messengers: We celebrate the ongoing
contributions of NASA’s telescopes and space probes to the scientific legacy that Galileo
initiated 400 years ago with his celestial observations and the publication of Siderius Nuncius –
“The Starry Messenger”.
Go Observe with NASA Venus: By observing the phases of Venus, Galileo concluded Venus orbits the Sun - and not
the Earth. The planet Venus is the brightest celestial object in the sky after the Sun and the
Moon, and appears brighter to us than the star Sirius. January is the best time to view Venus in
the evening sky in 2009.
NASA Mission Milestones
• American Astronomical Society (AAS) meeting press releases from NASA missions, Long Beach, CA, January 4-8, 2009.
International IYA Events
• Opening ceremony at UNESCO HQ, Paris, France, January 15-16, 2009
US IYA Events • Joint US-NASA IYA opening ceremony at AAS and special sessions, January 6-7, 2009
• Local IYA opening events, January 10, 2009
NASA IYA Events • Joint US-NASA IYA opening ceremony at AAS and special sessions, January 6-7, 2009
• Visions of the Universe: Four Centuries of Discovery, a traveling exhibit for libraries begins
national tour January 21, 2009.
NASA Facts • 5th anniversary of Mars Exploration Rover landings (January 4 and January 25)
Galileo Facts • Galileo first observed three “stars” near Jupiter on January 7, 1610. By January 15, 1610,
he concluded that four objects were orbiting Jupiter.