merucy america's first human space filght program introduced the nation to its first astronaust there were six total flights with six astronaust flown total filghts time for these mission was 53 hours 55 minutes and 27 seconds
mercury eccentric orbit takes the small planet as 47 million km (29 million mile ) (and as for as 70 million km 43 million mile ) from the sun.
mercury has a lerge metatlic core with a radius of about 1240 miles (2000 km about 80 percnt of the planet's radius.
mercury is 1/3 the size of earth
88 earth day equal 1 year on mercury
mercury has o moon's