Neptune's blue hue, magnetic cities, space cakes – Physics World - physicsworld.com

Excerpts from the Red Folder

Spot the difference: Uranus (left) is a lighter blue than Neptune despite being a similar mass, size and with a comparable atmosphere. (Courtesy: NASA/JPL-Caltech/B. Jónsson) Ever wondered why Neptu… [+2100 chars]

full article...