atmosphere | pwn physics 365 | 31 March 2016

May 2, 2016

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On this day in physics: 31 March 1966- The Luna 10 became the first spacecraft to orbit the moon, which was launched by the USSR.

Word of the Day- Atmosphere is a gaseous layer surrounding a planet or other body which has a strong enough gravity to hold gaseous substances to it. Think about that. The gravity of the earth is the only thing holding those gaseous particles in place on our planet. Earth's "atmosphere" has several different "layers", including the troposphere, stratosphere, mesosphere (where many meteors are observed), thermosphere, and exosphere. The atmosphere also highly contributes to trapping sunlight and thermal heat on our planet, making it suitable for life. By contrast, the moon has virtually no atmosphere, similar to that of Mercury. They do not have the substance of gravity to significantly bind matter to the planet. 

Question of the Day- Do you appreciate your atmosphere?? 

Keywords: Atmosphere, Luna, USSR, Moon
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