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The Universe at Your Fingertips 2.0 DVD from the Astronomical Society of the Pacific is in our online store, filled with Earth and space science resources.
Image of Mariner 10
NASA/JPL

Mariner 10

Mariner 10 was launched on Nov. 3, 1973, intended as a flyby of planets Venus and Mercury. It passed Venus in February of 1974, returning over 4000 photographs of the thick cloud cover which surrounds the planet, and information on the atmosphere composition.

Mariner 10 then used the gravitational pull of Venus to accelerate itself toward Mercury, becoming the first spacecraft to visit that planet, on March 29, 1974. During the next year, two more flybys produced a total of 10,000 images, revealing a heavily-cratered surface similar to that on our Moon.

After mapping 57% of Mercury, Mariner 10 ran out of energy and is now in an orbit around the Sun.


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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