The first crewed mission to Mars could be a scouting mission. Lockheed Martin's concept is calling for 'astronaut-scientists' to study the Red Planet from orbit for future landing sites, to remotely operate rovers...
mspohr quotes a report from Phys.Org: A new study published in the Journal Nature Climate Change shows our precarious climate condition: "Using up all known fossil fuel reserves would render Earth even more unlivable than scientists had previously projected, researchers said on Monday. Average temperatures would climb by up to 9.5 degrees Celsius (17 degrees Fahrenheit) -- five times the cap on global warming set at climate talks in Paris in December, they reported. In the Arctic region -- already heating at more than double the global average -- the thermometer would rise an unimaginable 15 C to 20 C." This would make most of Earth uninhabitable to humans (although the dinosaurs seemed to do fine with it 65 million years ago). The report also stated that if fossil fuel trends go unchanged, ten times the 540 billion tons of carbon emitted since the start of industrialization would be reached near the end of the 22nd century. For comparison, "older models had projected that depleting fossil fuel reserves entirely would heat the planet by 4.3 C to 8.4 C. The new study revises this to between 6.4 C and 9.5 C," writes Phys.Org.
These behemoths — which lie at the hearts of most if not all galaxies, and can contain billions of times more mass than the sun — probably form after the collapse of gigantic gas clouds, rather than the death of individual stars, a new study suggests.
A Europeanized Russian Soyuz rocket on May 24 successfully placed two European Galileo positioning, navigation and timing satellites into medium-Earth orbit — the 13th and 14th in a series of 26 Galileo spacecraft, with more to come.
An anonymous reader writes: Facebook has said once again in an open letter to Sen. John Thune, chairman of the Senate Commerce Committee, that its Trending Topics section is free of any political bias or manipulation. But in response to Gizmodo's report that Facebook employees were suppressing conservative news stories, Facebook is revamping how editors find trending stories. "We could not fully exclude the possibility of isolated improper actions or unintentional bias in the implementation of our guidelines or policies," Facebook general Counsel Colin Stretch wrote. Of course, Facebook is going to train the human editors who work on their trending section; they're also going to abandon several automated tools it used to find and categorize trending news in the past. Recode provides some examples, writing, "[Facebook] will no longer use its "1K list," a group of 1,000 websites it used to help verify headlines." Facebook will also get rid of several top publications, including the New York Times and CNN.
Here are the best telescopes for the money. Our top picks include recommendations for city dwellers, hobbyists and gift-givers, as well as budget picks. Our editors have selected a few of the best options in each of four categories.