Luna 1 was the first successful flyby satellite launch to the Moon.
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The first successful flyby satellite launch to the Moon was the Soviet Union's Luna 1 mission on January 2, 1959. Luna 1 passed within 5,995 km of the Moon's surface before becoming the first artificial object to orbit the Sun.
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The first satellite NASA sent to Mars was called Mariner 4. It was launched in 1964 and performed a flyby of Mars in 1965, sending back the first close-up images of the planet's surface.
The first satellite sent to Mars was called Mariner 4. It was launched by NASA in 1964 and successfully conducted a flyby of the planet in 1965, sending back the first close-up images of Mars' surface.
No, NASA has not sent a satellite specifically to Uranus. However, the Voyager 2 spacecraft conducted a flyby of Uranus in 1986, providing the most detailed data on the planet to date. There are no current plans for a dedicated mission to Uranus.