It actually means two, related things:
1) To stay a process means to sop it from going forward, that is, to make it stay as is.
2) To stay the course means to remain on the same, steady course without changing direction.
The two things have the common feature of maintaining things as they...
The basic astronomy job is to do astronomy, or to teach astronomy (or both). If you want to see what jobs there are, go to nasa.gov or astronomy .com or by Astronomy magazine.
No they are completely different. Also neither is a constellation. The Big Dipper is part of Ursa Major the Great Bear and Orion's Belt is part of Orion. The Big Dipper is in the northern sky, and the two stars of the end of the ladle point to the North Star (Polaris). Orion Lies almost...