Spacecraft from Earth have indeed been sent to Venus - in fact the first one to land on another planet was the Russian Venera 7 probe in the 1970s, along with several others in that series, and later Venera 9 which was Venus's first artificial satelite (orbiter). The USSR continued to send probes in the 70s and 80s including the Vega series. The United States also sent the Mariner series which included close approaches (flyby), and later the Galileo, Magellin, and Messenger probes for global mapping and gravity assists for later destinations. In the 1990s the ESA got on the scene with separate or joint projects like Cassini and Venus Express. Japan also sent several missions including two orbiters.
No natural satellites of Mercury have been discovered.
no, mercury and venus are the only two planets that do not have moons.
Since Earth's Moon was likely formed from a chance collision, the formation of moons may not have been a stable process in the inner solar system. Any moons that formed around Venus or Mercury could have been swept away by the stronger gravity of the Sun, as might smaller moons around Earth. If Mercury or Venus ever had satellites, they were lost long ago.
john William has explored the planet mercury... but no one has been sent out to this planet
There have been no manned missions to Mercury.
No natural satellites of Mercury have been discovered.
No natural satellites have been discovered in orbit around Mercury. Planetary scientists are by now quite firmly convinced that the planet has no moons.
No natural satellites have been discovered in orbit around Mercury. Planetary scientists are by now quite firmly convinced that the planet has no moons.
No natural satellites of the planets Mercury or Venus have ever been discovered.
No natural satellites of Mercury have been discovered.
None. The planet had been observed by ancient astronomers by the 14th Century BC - so almost 3,500 years ago. Thus Mercury had been discovered a very long time before the first satellites were even dreamt of.
no, mercury and venus are the only two planets that do not have moons.
Natural satellites have been observed in orbit around every known planet in the solar system EXCEPT Mercury and Venus.
Natural satellites? none. Uranus - 27 known moons to date Jupiter - 63 known moons to date Saturn - 60 known moons to date Mercury - 0 Mars - 2 Earth - 1 Neptune - 13 known moons to date Pluto - 3 known moons to date Venus - 0 None because Mercury has no moons/satellites at all.
No satellites have been discovered yet in orbit around Mercury. As of now, the answer to the question is zero.
Earth. Earth has one natural satellite, the moon, which is in orbit around the earth. There are around 3000 man made satellites currently in orbit. Jupiter has the most natural satellites (moons), over 60 have been confirmed. It has no man made satellites in orbit around it, but did have one between 1995 and 2003, an orbiter called Galileo.
Planet Mercury was not discovered, it has been known to exist for thousands of years.