Etiquette



DP Etiquette

First rule: Don't be a jackass.

Other rules: Do not attack or insult people you disagree with. Engage with facts, logic and beliefs. Out of respect for others, please provide some sources for the facts and truths you rely on if you are asked for that. If emotion is getting out of hand, get it back in hand. To limit dehumanizing people, don't call people or whole groups of people disrespectful names, e.g., stupid, dumb or liar. Insulting people is counterproductive to rational discussion. Insult makes people angry and defensive. All points of view are welcome, right, center, left and elsewhere. Just disagree, but don't be belligerent or reject inconvenient facts, truths or defensible reasoning.

Tuesday, February 23, 2021

Perseverance Descent Video

 This is from a New York Times article:



The car-sized Perseverance rover is about 10 feet long (not including the robotic arm arm), 9 feet wide and 7 feet tall (about 3 meters long, 2.7 meters wide and 2.2 meters tall). It weighs 2,260 pounds (1,025 kilograms) on Earth. Mars gravity is about 38% of that on Earth. Does that mean it weighs only about 859 pounds on Mars?


This interactive graphic gets into the details of what is on and in the rover.

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