and its launch date?
August 3, 2004
Mercury (planet)
A second NASA mission to Mercury, named "MESSENGER" (MErcury Surface, Space ENvironment, GEochemistry, and Ranging), was launched on August 3, 2004.
which planet is mercury? The smallest and innermost planet in the Solar System. can you describe its surface structure in few words? Mercury's surface is similar in appearance to that of the Moon, showing extensive mare-like plains and heavy cratering, indicating that it has been geologically inactive for billions of years is there any astronomer who visited it or had run a research on it? Yes, ancient astronomers made observations of Mercury can you name any two space probes which may have been used in its study? "Mariner 10" and "MESSENGER" please mention at least one of those observations? Mercury's apparent magnitude is calculated to vary between −2.48 around superior conjunction and +7.25 around inferior conjunction. who launched the former probe? NASA what is its full form? National Aeronautics and Space Administration when was it launched? 1974 was the latter probe also launched by the same organization? Yes, second NASA mission to Mercury
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Mercury (planet) [SEP] "MESSENGER"
A second NASA mission to Mercury, named "MESSENGER" (MErcury Surface, Space ENvironment, GEochemistry, and Ranging), was launched on August 3, 2004. It made a fly-by of Earth in August 2005, and of Venus in October 2006 and June 2007 to place it onto the correct trajectory to reach an orbit around Mercury. A first fly-by of Mercury occurred on January 14, 2008, a second on October 6, 2008, and a third on September 29, 2009. Most of the hemisphere not imaged by was mapped during these fly-bys. The probe successfully entered an elliptical orbit around the planet on March 18, 2011.