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What was the first probe that successfully landed on Mars?

Curiosity

Viking 1

Pionner 10

Luna 1

Viking 1 was the first of two spacecraft (along with Viking 2) sent to Mars as part of NASA's Viking program. On July 20, 1976, it became the first spacecraft to land successfully on Mars and perform its mission. Viking 1 held the record for the longest Mars surface mission of 2307 days until that record was broken by Opportunity on May 19, 2010.

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3

wikipedia → Viking 1

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How long did it take Apollo 11 flight to reach the Moon?

What are the most luminous objects in the universe?

supergiant stars

What is the name of the first in history cosmic tourist (astrotourist)?

Neil Alden Armstrong

Richard Garriott

Which telescope was designed to detect exoplanets?

The Kepler Space Telescope

Space Chandra Telescope

The Hubble Space Telescope

Atacama Large Millimeter / submillimeter Array (ALMA)