+ View the NASA Portal Search JPL
	SIGN UP + JPL email news + RSS feed + Podcasts QUICK SEARCH     Current missions Active Cavity Irradiance Monitor Satellite Aster Atmospheric Infrared Sounder Cassini Cloudsat Dawn Deep Impact Galaxy Evolution Explorer Gravity Recovery and Climate Experiment Jason 1 Keck Interferometer Mars Exploration Rover Mission Mars Odyssey Mars Reconnaissance Orbiter Microwave Instrument for the Rosetta Orbiter Microwave Limb Sounder Multi-angle Imaging SpectroRadiometer Ocean Surface Topography Mission/Jason 2 Palomar Observatory Phoenix Mars Lander Quick Scatterometer Spitzer Space Telescope Stardust Tropospheric Emission Spectrometer Ulysses solar polar mission Voyager Useful links Basics of Space Flight College Grads at JPL Deep Space Network Employment Opportunities Global Climate Change History of JPL JPL Robotics JPL Science JPL Space Gallery JPL Student Programs Mars Exploration Near-Earth Objects Planet Quest Rover news and images Solar System Simulator Solar System Exploration Systems and Software Virtual Field Trip Wallpaper News & Features September Peak Month for Atlantic Hurricanes Why is September the peak month for hurricanes? NASA oceanographer Bill Patzert provides some insights. + NASA feature (Sept. 5) Rosetta Set To Fly By Asteroid On its way to a 2014 rendezvous with a comet, the European Space Agency's Rosetta spacecraft will fly by asteroid Steins on Sept. 5. JPL manages NASA's participation in the Rosetta mission. + Rosetta home page (Sept. 4) NASA's Carl Sagan Fellows to Study Extraterrestrial Worlds NASA announced Wednesday the new Carl Sagan Postdoctoral Fellowships in Exoplanet Exploration, created to inspire the next generation of explorers seeking to learn more about planets, and possibly life, around other stars. + View release (Sept. 3)   MORE JPL NEWS SITE TOOLS SITE FEATURES   + News releases + Features + Accessibility + Multimedia players + Language Assistance Program (PDF) + NASA Water Cleanup    Phoenix Toolkit     › Latest images › Raw images › JPL Phoenix site  JPL Blog       The Chemistry of Snow Certain molecules are being deposited into snow at Earth's poles that can eventually damage our protective ozone layer. + Go to blog  New Multimedia     Video: Rover Flight Director Report Want to know what our intrepid rovers have been up to lately? In our latest Mars Rover report -- Spirit is cloud-watching and Opportunity is moving up in the world. + Play video     Video: JPL Space Album, Summer 2008 As the summer comes to a close, take a moment to enjoy some of the best scenes from Earth, the solar system and beyond. + Play video       Upcoming Events (Pacific time)       Sept. 25 and 26 -- Lecture/webcast series + California's 'Big One' and the San Andreas Oct. 16 and 17 -- Lecture/webcast series + New Wheels on Mars: The Mars Science Laboratory              + Freedom of Information Act Site Manager: Susan Watanabe Webmasters: Tony Greicius, Martin Perez