Diablo Lake in Washington state USA, gets its brilliant colour from its surrounding glaciers that grind rocks into a fine powder. The powder is carried into the lake through creeks where it is suspended in the water, giving it a brilliant colour.
This week I learned about ‘Breakthrough Starshot’, which is a project that aims to launch a fleet of spacecraft to a neighbouring star by 2036. The spacecraft are tiny (about 1 centimeter large, not including their sails) and they’d carry miniature cameras and other equipment. The idea is that a swarm of these tiny spacecraft could be accelerated through space by huge lasers down on Earth. They would be able to reach the habitable planet Proxima Centauri b within 20 to 30 years. A truly amazing idea.
Three new planets!
Three new planets have been discovered ‘just’ 12 light-years from Earth, and one of them is in the habitable zone of its star. It is another piece of evidence suggesting that there are many, many small planets out there that could harbor water. (Artwork by M. Kornmesser at ESO)