[lemma=□]
[lemma=solar]
Flight controllers will not deploy the port wing tonight to allow time to understand whether the solar wing that has deployed is properly tensioned . Science Browse TopicsThis includes links to government agency pages on aerospace , air pollution , birds , conservation , earth sciences , electricity and electronics , environmental protection , information technology minerals and mining , nuclear power , oceanography , patents and trademarks , pest and weed control , radiation , robotics , scientific research , solar energy , space exploration , standards , water management , weather , wildlife management . Wind and solar power are also being discussed as viable alternatives to oil . On the afternoon of February 18 , 1930 after a meticulous search begun years earlier at Lowell Observatory , Clyde Tombaugh discovered the ninth planet in our solar system : Pluto . At present , residents also need planning permission to install a simple solar water heater on their own roof ( which could generate around 70 % of water heating needs ) , and this clearly also needs addressing as many are discouraged by this .