*By Conor White*
The Curiosity rover is no longer alone on Mars.
NASA's InSight lander successfully touched down on the Red Planet Monday afternoon, but spectators will have months to wait before any results arrive.
"It's a 26-month mission," said Sarah Lewin, an associate editor at Space.com said. The first results from InSight's experiments are expected sometime in the spring.
InSight marks NASA's first mission to Mars since Curiosity began its journey in 2011. The launch was originally scheduled for 2016 before officials discovered a leak in the rocket's vacuum chamber. As a result, InSight missed its launch window. The delay and necessary repairs added almost $154 million to the mission's price tag, bringing it to a total cost of $814 million.
And even those years of planning didn't guarantee a success.
"Mars missions have like a 40 percent success rate across the world," Lewin said. "NASA is a little bit higher, so there was a definite chance it wouldn't work."
Now that it has safely landed, the probe will be responsible for drilling into Mars ー largely to determine the planet's composition. The robot will also monitor the planet for "Marsquakes."
"We've put a lot of things on Mars that are either orbiters, which are looking down on it, or rovers like Curiosity exploring the surface, but we really don't know what's going on inside," Lewin said.
The World Health Organization's cancer agency has deemed the sweetener aspartame — found in diet soda and countless other foods — as a “possible” cause of cancer, while a separate expert group looking at the same evidence said it still considers the sugar substitute safe in limited quantities.
More than a third of Americans were under extreme heat advisories, watches and warnings Thursday as a blistering heat wave that's been baking the nation spread further into California, forcing residents to seek out air conditioning or find other ways to stay cool in triple-digit temperatures.
Tourists in central Athens huddled under mist machines, and zoo animals in Madrid were fed fruit popsicles and chunks of frozen food, as southern Europeans braced for a heat wave Thursday, with a warning of severe conditions coming from the European Union’s space agency.
A new study published in Nature has found that more than 56 percent of the world's oceans have changed color in the past 20 years, and climate change is to blame.
Recently discovered teeth of a two-million-year-old human relative in Africa could give researchers new insight into genetics.
U.S. officials have approved the first over-the-counter birth control pill, which will let American women and girls buy contraceptive medication from the same aisle as aspirin and eyedrops.
The Webb Space Telescope is marking one year of cosmic photographs with one of its best yet: the dramatic close-up of dozens of stars at the moment of birth.
