Right City Rong Planets

It's really Wright not Right, and wrong not Rong, but it's right because via route J it's only 11 miles from my mother in law's house and Bob gives us a good rate at his motel. His Wi-Fi sucks though. He's from India and since I speak a little Hindi he likes me even though... 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 →

Why don’t these “thousands” of satellites fall back to Earth, if the likes of the ISS has to use booster rockets to stay up there?

It all depends on how thick the atmosphere is where the satellite is orbiting. The atmosphere doesn’t just “end” at a certain height. It just gets thinner and thinner. In low Earth orbit, where the ISS is orbiting, there is still some atmosphere. It’s very, very thin, but it’s there. At the top of Mount... Continue Reading →

We know gravity keeps the Moon in orbit. Why is there no gravity on the ISS?

This is an image of Newton’s Cannon. Given a high enough elevation, shooting a canon-ball at increasing velocity will cause it to travel further and further until it just goes into orbit, falling around the earth. That is what’s happening inside the ISS. It’s called free-fall - the same as Newton’s canon-ball. The ISS is falling toward... Continue Reading →

If you launched a satellite into low earth orbit and let it travel indefinitely without course corrections, how long would it take before it hits another object?

Okay, your question is how long until it hits another object also in low earth orbit, AKA space debris. In low Earth orbit you are not completely above the atmosphere, though it’s pretty thin up there. Most objects we place in orbit don’t need course corrections and likely succumb to the ever so slight air... Continue Reading →

Why don’t we see the hidden face of the moon? Is this because the moon rotation is perfectly synchronized with Earth?

You are correct. The moon is synchronized with Earth, although not perfectly. There is a wobble which I’ll show you below. The “face on the moon” means that some people see what looks like a face on the side of the moon we can see. It’s not on the far side, but the side we... Continue Reading →

If an intelligent species preceded us on Earth and wanted to leave a record of themselves in a time capsule, then one of the Lagrange points would be a good place for it. Is anyone looking for one there?

Great question! You asked specifically if one of the Lagrange points could be a good place to hide a time capsule from the past. The answer is “no” because, you see, an orbit in a Lagrange point is inherently unstable and would eventually either fall to Earth or fall to the Sun. According to space.com, “L1,... Continue Reading →

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