The Mariner spacecraft were unmanned at launch.
Mariner 10 and MESSENGER flew past Mercury.
Because it didn't :)
Because it didn't :)
They flew
armstrong
The Mariner 10 probe photographed Mercury in 1973. The MESSENGER spacecraft flew by Mercury in January 2008, and revealed previously unseen details in high resolution photographs. Both of these spacecraft were launched by the US. As far as is known to the public, no manned missions and no astronauts have ever been anywhere near Mercury.
In the year 1974 NASA's Mariner 10 space probe flew by the planet Venus. Later in the year the same probe flew by the planet Mercury, the first flyby of the planet in human history.
Astronauts aboard the space shuttle were primarily NASA astronauts, astronauts from Canada, Europe and other countries.
As each Apollo spacecraft had three astronauts at a time and seven Apollo crafts flew to the moon, there were a total of 21 astronauts.
It didn't, it flew by Venus October 19, 1967.
7 astronaut did
None of the seven Mercury astronauts flew to the moon. The Mercury program focused on sending astronauts into space for short periods of time and did not involve missions to the moon. The Apollo program, which followed the Mercury program, was responsible for sending astronauts to the moon.