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With Explore the Planets, investigate the planets, their moons, and understand the processes that shape them. By G. Jeffrey Taylor, Ph.D. See our DVD collection.

Space Missions

 

According to <a href="http://www.jpl.nasa.gov/news/news.php?release=2013-277">NASA scientists</a>, the Voyager 1 spacecraft entered interstellar space in August 2012, becoming the first spacecraft to leave the <a href="/php/tour_test_sqli.php?page=/our_solar_system/solar_system.html&edu=high">solar system</a>. The space probe is about 19 billion km from the <a href="/php/tour_test_sqli.php?page=/sun/sun.html&edu=high">Sun</a>.  <a href="/php/tour_test_sqli.php?page=/space_missions/voyager.html&edu=high">Voyager 1 and 2</a> were launched in 1977 on a <a href="/php/tour_test_sqli.php?page=/space_missions/voyager.html&edu=high">mission</a> that flew them both by <a href="/php/tour_test_sqli.php?page=/jupiter/jupiter.html&edu=high">Jupiter</a> and <a href="/php/tour_test_sqli.php?page=/saturn/saturn.html&edu=high">Saturn</a>, with Voyager 2 continuing to <a href="/php/tour_test_sqli.php?page=/uranus/uranus.html&edu=high">Uranus</a> and <a href="/php/tour_test_sqli.php?page=/neptune/neptune.html&edu=high">Neptune</a>. Voyager 2 is the longest continuously operated spacecraft. It is about 15 billion km away from the <a href="/php/tour_test_sqli.php?page=/sun/sun.html&edu=high">Sun</a>.<p><small><em>Image courtesy of NASA</em></small></p>The spinning vortex of <a href="https://www.windows2universe.org/saturn/saturn.html">Saturn</a>'s north polar storm resembles a giant deep red rose surrounded by green foliage in this false-color <a href="http://www.nasa.gov/mission_pages/cassini/multimedia/pia14944.html">image</a> from NASA's <a href="https://www.windows2universe.org/missions/cassini.html">Cassini spacecraft</a>. The eye is 2,000 kilometers across with cloud speeds as fast as 150 meters per second.
It is not known how long this newly discovered north-polar <a href="https://www.windows2universe.org/earth/Atmosphere/hurricane/hurricane.html">hurricane</a> has been active.
The view was acquired at a distance of approximately 419,000 kilometers from Saturn.<p><small><em>NASA/JPL-Caltech/SSI</em></small></p>

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF