... Only the Apollo astronauts have ever seen the Earth from far enough away to perceive it as a globe. ... Giovanni Domenico Cassini . Phobos . 1877 . 11.3 . Asaph Hall . Enceladus . 1789 . ...
... 11 comets and asteroids have been explored by spacecraft so far, as follows: ICE ... Apollos : semimajor axes greater than 1.0 AU and perihelion distances less than 1 ... Baade 1949 433 Eros 172800 33x13x13 Witt 1989 1862 Apollo 220061 0.7 ? ...