Welcome to Astronomy in Motion, videos, time-lapse movies, and animations showing astronomical subjects as they change and move across the sky.
The Solar System
The Grimsby Fireball imaged by the Southern Ontario Meteor Network.
Remarkable Explosion on the Sun — a time-lapse video of a huge solar flare, from the Solar Dynamics Observatory satellite.
Saturn in Motion — created by S&T imaging editor Sean Walker from Hubble Space Telescope photos.
The Four-Planet Dance — Venus, Jupiter, Mercury, and Mars in May, 2011.
Solar-System Evolution: The Nice Model by Hal Levison of the Southwest Research Institute.
See also our videotaped interviews and how-to demonstrations.