Why would the footprints of astronauts not be wiped out from the surface of the moon?

Well, there’s no air, and therefore no wind on the moon. There’s really not a lot that could wipe out the footprints. They’ll be there a long time. What will happen, eventually, however, is meteorites striking the moon. Really big ones might make the ground shake where the footprints are and cause the fine dust... Continue Reading →

Why does the moon revolve around the earth?

It just moves forward. The moon isn’t stationary. It has inertia and no atmosphere in space to slow it down. It just goes. As it moves forward, the gravity of Earth tugs on it and it falls, but because it’s moving forward it misses Earth as it falls and goes around, again and again. That’s... Continue Reading →

Did we “accidentally” bring new bacteria to the moon or Mars via our space exploration programs?

Probably, and that’s why terraforming is a bad idea. Inside the scientifically minded community, there are two distinct ideas. Don’t contaminate. Leave whatever planet it happens to be in the original prestine condition so we can study it. (This is the predominant, tree hugging concept.) Screw number 1. Terraform the planet. Make it livable for humans,... Continue Reading →

How many satellites are there, and which are there on each planet?

If you count all the little nuts, bolts, loose wrenches and pieces of demolished satellites as satellites, then there’s a whole lot of junk floating around Earth. Thousands of pieces that pose a hazard. Around the moon we have about three functioning spacecraft but have launched far more than that that have, over time, gone... Continue Reading →

Do you believe NASA when they state that they destroyed the technology to return to the moon?

NASA never said anything like that. What did happen was that when the Apollo program was shut down, the building that the Apollo’s were built in was retooled for newer technology. In the process, some parts were thrown away because they were outdated and better stuff was available. The reason we stopped going to the... Continue Reading →

What are the similarities and differences between planets and dwarf planets?

A dwarf planet is usually a spherical body resembling a small planet. Objects in space are round because of their gravity. If they aren’t big enough, they don’t have enough gravity to crush them into ball shape. This asteroid, which came from outside our solar system system recently, looks like a big slab. So both... Continue Reading →

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