What can be said about the Deep Impact spacecraft’s imminent second rendezvous with a comet? From NASA websites comes the following information: The Deep Impact spacecraft is about to rendezvous with another comet. It will be the fifth comet to … Continue reading →

“We stand on the verge of a vast cosmical discovery such as nothing hitherto imagined can compare with.” —Sir John Herschel in 1850, upon the discovery of a link between magnetic storms on Earth and sunspots, to Michael Faraday, the … Continue reading →