Questions tagged [astronomy]

Directly above the left shoulder of Orion, as I hold my closed fist maybe eight or ten inches in front of my face the distance between them is approximately from my knuckle to my wrist. A very bright star with an orange or dirty yellow…

Given the diameter of the sun, the diameter of a planet, and the distance between them, how do you calculate the length of the planets shadow?

Check me on this premise - eventing heavier than hydrogen was formed at the heart of another star that exploded. If so, where was that star, and what remains of it (other than us)? What is the evidence for that?

Is it possible to infer information about the structure of the universe beyond the observable one, by observing its effects on the parts we can see? Can for example gravity from sources we cannot see affect objects which we can see, and allow us to…