1. GSLV satellite
2. PSLV satellite
mercury has no known satellites .
Deimos and Phobos are the two moons of Mars
I don't know of any planet with exactly 21 known moons. The best answer is probably "Uranus" with 27 moons (natural satellites).
jupiter has the maximum number of satellites.... of almost 63 moons
2
mercury has no known satellites .
Deimos and Phobos are the two moons of Mars
As far as is known: -- Neither Mercury nor Venus has any natural satellites. -- Earth has one -- Mars has two
Neptune has 13 known satellites to this date.They are:NaiadThalassaDespinaGalateaLarissaProteusTritonNereidHalimedeSaoLaomedeiaPsamatheNeso
There are no known satellites of Mercury.
I don't know of any planet with exactly 21 known moons. The best answer is probably "Uranus" with 27 moons (natural satellites).
Venus is one of the few planets that doesn't have any satellites orbiting around it. Venus also is a planet with no moons.
Venus has no known natural satellites or moons.
Both Mercury and Venus have no known natural satellites (moons).
Venus has no known natural satellites (moons).
Venus has no known natural satellites or moons.
Both Mercury and Venus have no known natural satellites (moons).