In the last episode of Cosmos: A Spacetime Odyssey (which you can watch online), the show was trying to make a case for dark matter. Here is what Neil DeGrasse Tyson said about orbiting objects. "In ...

Orbital and suborbital flight are common terms in the spaceflight industry that sound very similar, but they mean different things. The main difference between orbital and suborbital flight is the ...

The gravitational attraction between two objects decreases with distance. This means that the closer the two objects are to each other, the stronger the force of gravity between them. If the force ...