Kepler-452b revolves around a sun much like our own.
January 12, 1987|
LONDON—Competing schemes to take Western Europe into a new era in extraterrestrial transportation are posing a conundrum for the continent's space planners. At the heart of the debate is just how ambitious Western Europe wants to be in its next generation of space launchers, together with whether the countries involved can put aside their contrasting approaches and agree on a common goal. At issue is the next big transportation project for the 13-nation European Space Agency (ESA), the Par