Updated September 18, 2016. Definition. An aphorism is a tersely phrased statement of a truth or opinion, or a brief statement of a principle. Adjective: aphoristic. Also known as (or similar to) a saying, maxim, adage, saw, dictum, and precept.
The first successful flyby of Venus was performed by NASAâs Mariner 2 spacecraft on 14 December 1962, following failed attempts by both the Soviet Union and the USA. The first successful landing was the Soviet Venera 4 lander, which touched down on the surface on 18 October 1967.
Source of the image above with hyperlinks for each mission. Missions to the Moon have been conducted by the Soviet Union, United States, European Space Agency, Japan, India and the People's Republic of China. The Moon has also been visited by five spacecraft not dedicated to studying it; four spacecraft have flown past it to gain gravity assists, and a radio telescope, Explorer 49, was placed into selenocentric orbit in order to use the Moon to block interference from terrestrial radio sources.