The planets Jupiter, Venus, Mercury and Mars are currently performing a beautiful dance in the morning sky just before sunrise. From late April until late May, these four planets will appear very close together. (Photo taken by Bill Collison on 13th May 2011, Creative Commons license, brightened and labelled by me.)
He has very kindly allowed me to include a copy of his copyrighted photo here for personal non-commercial purposes (permission granted via FlickrMail), and I’ve brightened it and labelled the planets.
I used Stellarium to generate this time-lapse simulation of the planets from 1st April to 15th June, as seen from Earth, with the horizon removed. Please watch the video fullscreen in 720p HD.
I also used NASA’s JPL Solar System Simulator to generate this time-lapse diagram of the Solar System for the same range of dates. Please watch the video fullscreen at 480p quality.