After 10 months and 442 million miles, the orbiter is scheduled to begin orbiting Mars this weekend. MAVEN will spend a year gathering information about the planet's upper atmosphere, in an effort to learn what made Mars inhospitable to life.
The Boeing Company and Space Exploration Technologies Corp. will soon be ferrying NASA astronauts to the International Space Station. The private contractors will lend the space agency much more than a lift.
An unexpected uptick in birthrates in sub-Saharan African countries could accelerate global population growth. By the end of this century, the world's population could climb as high as 12.3 billion people, according to new estimates.
The space rock that struck Earth some 66 million years ago did more than usher the non-avian dinosaurs to extinction, allowing mammals to flourish. New research shows that conditions after the impact were also a boon for deciduous plants.
In recent years, lionfish, native to the South Pacific and Indian Oceans, have invaded Caribbean and southeastern US waters. Water temperature has so far limited their range, but warming waters could open up new frontiers for these efficient colonists.
NASA's Near Earth Objects program, which is tasked with identifying and cataloguing potentially hazardous space rocks, needs to be better organized and staffed, reports an audit from the agency's inspector general.