In comparison to the twin Voyagers, Dawn's flight path circled the sun in an anti-clockwise manner. The map of its path shows its targets, Ceres and Vesta were in a trajectory that was close to a

Scout Astronomy Dictionary, letter S It is the smallest solid fuel rocket used by NASA to put scientific satellites into Earth orbit. It is composed of four sections with a total length of 23 m. In its standard version it weighs 21,450 kg and can put into orbit up to a maximum of 175 kg of payload.

This might be an astronomy.stackexchange.com question, but I think it is more in line with a camera obscura. During the last eclipse I didn't plan ahead and grabbed some lousy toy "spy" telescope…

I was fortunate enough to see the solar eclipse in southern Illinois last year. The clouds were not friendly, but we did have one spectacular moment of perfect eclipse. It is an eerie sensation, an…

Eratosthenes experiment to find the circumference of the Earth is usually said to be performed on the Zero Shadow Day at Syene. Is it necessary? Can this experiment be performed on any day for two

I've had a Celestron 127EQ for a couple years now and have only used it a couple times. One of the reasons I haven't gotten much use out of it is that when I do use it I spend all of my time aligni…