If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system. Mercury Venus Earth You Are Here Moon Mars Jupiter Io Europa Ganymede Callisto Saturn Titan Uranus Neptune Pluto(we still love you) That was about 10 million km (6,213,710 mi) just now. Pretty empty out here. Stephen Hawking's new theory offers black hole escape - physics-math - 24 January 2014. Cosmic Web Seen for the First Time: Image credit: S.
Cantalupo/J. Primack/ A. Kylpin As our understanding of the universe has developed over the centuries, we have had to redefine what we thought was the fundamental, large-scale structure of the universe. Tour the Solar System. Where Are They Now: Checking In on Earth’s 25 Active Missions [Infographic] By Michael Bullerdick and Julie Rossman From twin satellites photographing the sun in 360° to rovers on Mars to a ‘70s-era probe passing out of the heliosphere and into interstellar space, mankind has more than two dozen currently active spacecraft outside simple Earth orbit.
![Where Are They Now: Checking In on Earth’s 25 Active Missions [Infographic]](http://cdn.pearltrees.com/s/pic/th/checking-missions-infographic-76148289)
We created this infographic to showcase where all Earth’s interplanetary explorers are today, and what they’re up to. Click here to enlarge Since the Soviet Union launched the first space probe, Sputnik, in 1957, approximately 160 unmanned space probes have been launched by various countries, or those working cooperatively, to photograph and analyze the sun, the Earth, the moon, interplanetary space, comets, asteroids and planets in our Solar System.
Most probes are designed to “flyby” or orbit celestial targets; however, several—such as Curiosity and Chang’e 3—have been designed to make surface landings and to employ mobile rovers to search for evidence of life-sustaining water.
NASA Science. Photopic Sky Survey. 50_Years_Space_Exploration1.jpg (JPEG Image, 3861x1706 pixels) - Scaled (26%) 2012 March 12 - The Scale of the Universe Interactive. 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. 2012 March 12 The Scale of the Universe - Interactive Flash Animation Credit & Copyright: Cary & Michael Huang Explanation: What does the universe look like on small scales? On large scales? Tomorrow's picture: dust before galaxies Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)NASA Official: Phillip Newman Specific rights apply.NASA Web Privacy Policy and Important NoticesA service of:ASD at NASA / GSFC& Michigan Tech. Exploratorium: the museum of science, art and human perception.