Stand on the equator and you'll be moving at 1,670 kilometers per hour — faster than the speed of sound! That's how quickly Earth rotates on its axis, from West to East. And that rotation is ...

Chicagohenge is a stunning biannual event that happens during the spring and autumn equinoxes, when the sun aligns perfectly with Chicago’s street grid.

Polaris sits directly above the Earth’s northern axis. So aligning it to a Polaris ... If you have not had experience with an equatorial mount before then setting up the Sky-Watcher Explorer ...