Monthly Archives: July 2014

First it is necessary to understand the new story of the solar system. The planets, comets, and other bodies orbiting the sun were born, some 4.5 billion years ago, from a spinning disk of dust and gas called the solar … Continue reading →

Life on other worlds, whether in our own solar system or orbiting distant stars, might well have to survive in ice-covered oceans, like those on Jupiter’s Moon Europa, or in sealed, gas-filled caves, which should be plentiful on Mars. If … Continue reading →