The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may not be lonely giants after all. The findings could force scientists to revise their ...

Illustration of a Mars transit habitat and nuclear propulsion system that could one day take astronauts to Mars. Credit: NASA For NASA, sending a crewed mission to Mars has been the long-term goal for ...

"There are still many things related to planetary formation and the early evolution of young planetary systems that we don't understand." When you purchase through links on our site, we may earn an ...