
Space
Get flash to fully experience Pearltrees
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Explanation: Although its colors may be subtle, Saturn's moon Helene is an enigma in any light. The moon was imaged in unprecedented detail last June as the robotic Cassini spacecraft orbiting Saturn swooped to within a single Earth diameter of the diminutive moon . Although conventional craters and hills appear , the above image also shows terrain that appears unusually smooth and streaked.
APOD
Mars Exploration Rover Mission: Home
Durable NASA Rover Beginning Ninth Year of Mars Work Eight years after landing on Mars for what was planned as a three-month mission, NASA's enduring Mars Exploration Rover Opportunity is working on what essentially became a new mission five months ago. >> 'Greeley Haven' Is Winter Workplace for Mars RoverTitan's atmosphere makes Saturn's largest moon look like a fuzzy orange ball in this natural color view from the Cassini spacecraft. Titan's north polar hood is visible at the top of the image, and a faint blue haze also can be detected above the south pole at the bottom of this view. Recent Cassini images suggest Titan's north polar vortex, or hood, is beginning to flip from north to south (see PIA14913).
Cassini
Phoenix
Space.com
SpaceWeather
Weather Resources
Space Weather studies the environmental dynamics of "geospace": the active (and sometimes stormy) region above the Earth's lower atmosphere including the ionosphere (which often reflects AM radio waves back to Earth) and the magnetosphere (home of the Van Allen radiation belts and the environment of many spacecraft -- including the numerous geosynchronous satellites used for communications and other applications.) The relevant NASA division is called Heliophysics , because the region is controlled by the Sun. The following list gives active links to information about space weather and associated fields of scientific research. For software that can be used in a kiosk to teach space weather, we have developed "Space Weather", part of our Space Update software . Thanks to support from the Magnetospheric Multiscale Mission , the "Space Weather" CD is available free for educational organizations, and is part of the annual Sun-Earth Day packets from NASA.We rarely see a good comet when it's at its best. Most comets are brightest when nearest the Sun - just when they’re most likely to be hidden in the Sun’s glare or below the sunrise or sunset horizon. That's the situation this spring with Comet C/2009 R1 (McNaught).
C/2009 R1 McNaught - June 2010
Hayabusa Mission

