none
yes cassini did
have any satellite or robots look-up close to neptune
As of now, no robots or satellites have explored Eris directly. Eris, a dwarf planet located in the Kuiper Belt, has only been observed from afar using telescopes. The most detailed observations of Eris were made by the Hubble Space Telescope and other ground-based observatories, but there are currently no missions planned to visit or study Eris up close.
no
The "Cassini" in 2004.
yes cassini did
Voyager 2 is the only probe.
Voyager 2 is the only probe.
no because mercury is too close to the sun so nothing can touch mercury
The ones that got close up to neptune was your fACE
There have been no dedicated missions to explore Uranus with satellites or robots. The only spacecraft to have conducted a close flyby of Uranus was Voyager 2 in 1986.
Voyager 2 is the only spacecraft to have gone near Neptune.
Voyager 2 is the only probe and its closest approach was in August 1989.
As of now, Mercury has been explored by two spacecraft: NASA's Mariner 10, which conducted three flybys between 1974 and 1975, and the MESSENGER mission, which orbited the planet from 2011 until 2015. Mariner 10 provided the first close-up images of Mercury's surface, while MESSENGER offered extensive data on its geology, atmosphere, and magnetic field. There are currently no operational satellites or robots actively exploring Mercury.
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have any satellite or robots look-up close to neptune
As of now, no robots or satellites have explored Eris directly. Eris, a dwarf planet located in the Kuiper Belt, has only been observed from afar using telescopes. The most detailed observations of Eris were made by the Hubble Space Telescope and other ground-based observatories, but there are currently no missions planned to visit or study Eris up close.