Sailor Moon engagement rings!
(made on http://www.gemvara.com)
Fill your favorite container with water and float the vase. According to the movement of the air, the plants change their position within the container.
These special arthropods (stomatopods) have 16 visual pigments! We only have four, and we can see millions of colors. Their vision is hyperspectral, they can see ultraviolet and infrared wavelengths, as well as polarized light. They have 360 degree vision and three parts of each eye can focus on the same spot, so each individual eye has trinocular vision with depth perception. They have a very large focal range and the eyes can emit light, which is used for communication.
They have the most complex visual organs on the planet.
Astronomy Picture of the Day: The Hubble Space Telescope captured this breathtaking, edge-on photo of the NGC 4452 disk galaxy against a backdrop of hundreds of other galaxies.
Galaxies that appear this thin are rare mostly because our Earth must reside (nearly) in the extrapolated planes of their thin galactic disks. Galaxies that actually are this thin are relatively common — for example our own Milky Way Galaxy is thought to be about this thin.