Planet Mars: 1979
Synopsis
In 1971, the Mariner 9 spacecraft transmitted over 7,000 photographs of Mars, revealing a cratered surface and suggesting past water flow.
Synopsis
Giovanni Schiaparelli, an Italian astronomer, first observed channels on Mars in 1877, sparking interest in the planet's potential for life. The documentary details the findings from the Mariner and Viking missions in the 1970s. Mariner 9 transmitted over 7,000 photographs, revealing a cratered surface and signs of ancient water flow. Scientists continue to study Martian soil samples, seeking to understand the planet's chemistry and the possibility of life. Produced by NASA, the film reflects ongoing efforts in planetary exploration.
Deep Dive
Why Watch
- See the first photographs of Mars' surface from Mariner 9.
- Find out why early astronomers thought Mars had canals.
- Meet scientists studying Martian soil chemistry for life clues.
Did You Know
- Mars is about half the size of Earth.
- Mars orbits the Sun in 687 Earth days, making one Martian year.
- In 1877, Giovanni Schiaparelli discovered channels on Mars he called Canali.
- The Mariner 9 spacecraft transmitted more than 7,000 photographs of Mars in 1971.
Perfect For
Frequently Asked Questions
What is the length of a Martian year?
A Martian year is 687 Earth days long.
How long is a day on Mars?
A day on Mars is about 24 and a half hours long.
What did the Mariner 9 spacecraft reveal about Mars?
Mariner 9 transmitted more than 7,000 photographs, revealing a cratered landscape with features suggesting that water may have once flowed on Mars.
What are people saying?
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