What was the Mir space station, and how long was it in operation?

A Soviet space station that operated from 1971 to 1982, hosting only Soviet cosmonauts A Soviet and later Russian space station that operated from 1986 to 2001, the longest continuously crewed station before the ISS The Soviet station that first hosted a joint US-Soviet crew in 1975 A Soviet station placed in lunar orbit to support crewed Moon landings

What did NASA's Mariner 4 spacecraft reveal when it flew past Mars in 1965?

Mars has active volcanoes and a thick carbon dioxide atmosphere like Venus Mars has a heavily cratered surface and a thin atmosphere, making it far more barren than many had hoped Mars has ancient riverbeds and signs of current liquid water on its surface Mars has no atmosphere at all and its surface is covered in iron oxide dust

What did NASA's Viking 1 and Viking 2 landers accomplish in 1976?

They became the first successful Mars landers, conducting experiments that searched for signs of microbial life with ambiguous results They became the first Mars landers and clearly confirmed the presence of microbial life in the soil They orbited Mars and mapped the entire planet in detail but did not land They were the first spacecraft to detect methane in Mars's atmosphere, suggesting possible biology

What milestone did Pioneer 10 achieve after its 1972 Jupiter flyby?

It was the first spacecraft to orbit Jupiter and study its moons in detail It became the first spacecraft to travel beyond the inner solar system and cross the asteroid belt It became the first spacecraft to detect the Great Red Spot from orbit It was the first probe to send back color photographs of Jupiter's clouds

What made the Voyager 2 spacecraft uniquely important among all spacecraft ever launched?

It is the most distant human-made object ever, currently over 23 billion km from the Sun It is the only spacecraft ever to have visited all four outer planets: Jupiter, Saturn, Uranus, and Neptune It was the first spacecraft to detect gravitational waves from a pulsar It was the first spacecraft to land on one of Jupiter's moons and return samples

What is the Golden Record carried by both Voyager spacecraft?

A gold-plated map showing the location of every planet in the solar system A scientific data recorder storing all telemetry from the spacecraft's instruments A gold-plated copper disk containing sounds, music, and images representing Earth and humanity, meant as a message to any intelligent life that might find the spacecraft A reflective gold disk used to help scientists track the spacecraft from Earth

What achievement made the Soviet Luna 9 mission notable in 1966?

It was the first spacecraft to orbit the Moon and photograph the far side It was the first spacecraft to make a soft landing on the Moon and transmit images from the surface It was the first spacecraft to return Moon rock samples to Earth It was the first spacecraft to land on the Moon's south polar region

What did NASA's Mariner 10 accomplish in 1974 and 1975?

It became the first spacecraft to orbit Mercury and completely map its surface It performed the first flyby of Mercury, revealing a heavily cratered surface and a weak magnetic field It performed the first flyby of Pluto, revealing mountains of water ice It discovered active volcanoes on Mercury during a close polar flyby

Approximately how far from the Sun is Voyager 1, making it the most distant human-made object?

About 1 billion km — roughly the distance from Earth to Saturn About 6 billion km — near the edge of the Kuiper Belt About 23 billion km — more than 150 times the Earth-Sun distance About 1 light-year — almost halfway to the nearest star

What did the Soviet Venera 9 mission achieve in 1975?

It was the first spacecraft to orbit Venus and map its surface using radar It returned the first photographs taken from the surface of Venus, showing sharp angular rocks It detected signs of biological activity in Venus's upper cloud layer It was the first spacecraft to survive on the surface of Venus for more than 24 hours