What did the weather report on Mars sent back by American spacecraft show?

1On July 22, 976, the American Viking-1 spacecraft sent back a weather report from Mars, which was 78.54 million kilometers away from the Earth, saying that there was a first-class wind on Mars and the temperature was between 122 and 22 degrees Fahrenheit.

1On August 20th, 975, the United States successfully launched the "Viking-1"(VLKLNG1) weighing 3399 kilograms from Cape Canberra, Florida, with a Titan (Tl-TAN 3E) carrier rocket, including an on-orbit space probe and an unmanned landing craft for landing. "Viking-1" successfully landed on July 20th after 1 1 month, and sent back the weather report on July 22nd. Judging from the photos and data provided by Mars explorers, Mars is also a desolate world with many craters, steep walls and canyons on its surface. The air there is very thin, and the atmospheric pressure is only 7.5 millibars; 95% of the atmosphere is carbon dioxide, nitrogen accounts for 2.7%, oxygen is less than 0. 1%, and there is a trace of argon water vapor. Strangely, although the air is so thin, there will always be a "global" sandstorm, which can last for several months. At the same time, the temperature is often as low as MINUS 100 degrees Celsius. Scientists say: in such an environment, life is difficult to survive, and mice can only live for a few seconds; Turtles can live for 6 hours; Frogs can live longer, but only for 25 hours. ...

"Viking-1" sent back many precious photos to the earth, showing that the surface of Mars is an orange sand and the sky is orange red. According to scientists' analysis, the dust on Mars is composed of red iron oxide, so the Mars we see is a red planet.

The Viking-1 orbital probe stopped transmitting signals after circling 1400 laps on August 7, 0980, and the landing craft also lost contact on August 1982+0 13.