five thousand
no
Jupiter 2's B-9, but it is referred to as just "Robot".
yes
Galileo
Ricky Ricotta's Mighty Robot vs. the Jurassic Jackrabbits from Jupiter was created in 2002.
A robot. Humans couldn't survive there.
Jupiter's extreme environment, including its intense radiation, high pressure, and strong gravitational pull, poses significant challenges for building and operating a robot that could survive and function effectively. Additionally, the vast distance between Earth and Jupiter, along with the time lag for communication, would make real-time control of a robot on Jupiter extremely difficult.
Three of the robotic missions to Jupiter are Galileo (1989), Juno (2011), and Europa Clipper (scheduled for the 2020s).
There have been no man made robots or landers to land on Pluto yet. A probe called New Horizons is on it's way, it should finally get to Pluto in 2015, but won't land. It will fly by and take pictures.
Jupiter has natural satellites, also known as moons, as well as robotic satellites sent by humans to study the planet. Robotic satellites, such as the Juno spacecraft, have been used to gather data and images of Jupiter to enhance our understanding of the planet.
No. Nothing can land on Jupiter as it does not have a solid surface. The Galileo spacecraft orbited Jupiter from 1995 until 2002. In 1995 an atmospheric probe with the Galileo mission entered Jupiter's atmosphere to study it. The probe eventually melted as it entered the superheated layers deep in Jupiter's atmosphere. In 2002 the main Galileo space probe burned up in Jupiter's atmosphere at the end of its mission.
A visit to Jupiter is when a person learns to fly by 30 years of lessons from coral. They fly to Pluto, and find the transport to Jupiter.