SpaceX's first launch of 2018 was "a secretive spacecraft commissioned by the U.S. government for an undisclosed mission," reports TechCrunch. An anonymous reader quotes CNN: After more than a month of delays, a SpaceX Falcon 9 rocket vaulted toward the skies at 8 p.m. ET Sunday with the secretive payload. It launched from Cape Canaveral Air Force Station in Florida... The company [then] executed its signature move: guiding the first-stage rocket booster back to Earth for a safe landing. Just over two minutes after liftoff Sunday, the first-stage booster separated from the second stage and fired up its engines. The blaze allowed the rocket to safely cut back through the Earth's atmosphere and land on a pad at the Cape Canaveral Air Force Station... The company completed a record-setting 18 launches last year, and SpaceX plans to do even more this year, according to spokesman James Gleeson.

Legendary astronaut John Young -- who walked on the moon and piloted the first space shuttle -- died Friday at the age of 87. schwit1 shares a nice profile from CBS News: A naval aviator and test pilot, Young logged more than 15,275 hours flying time in a variety of aircraft, including 9,200 hours in T-38 jets. He spent 835 hours in space across his six NASA flights, serving as co-pilot of the first Gemini mission in 1965, commander of a second Gemini flight in 1966, lunar module pilot for Apollo 10 in 1969, commander of Apollo 16 in 1972 and commander of the first shuttle flight in 1981... Young was the first man to fly in space six times and the only astronaut to fly aboard Gemini and Apollo capsules and the space shuttle... He also brought a legendary cool nerve to an inherently dangerous job that amazed his compatriots. "I found out from the flight surgeon later on that my heartbeat was 144 at liftoff," Charlie Duke, one of Young's crewmates on the Apollo 16 moon landing mission, said of his reaction to launch atop a Saturn 5 rocket. "John's (heartbeat) was 70".
On one space shuttle flight, two of the ship's three auxiliary power units actually caught on fire, and exploded just minutes after touchdown. But Young always kept his cool. In 2010 Slashdot remembered the first manned Gemini mission in 1965. When it reached orbit, Young surprised his fellow astronaut Gus Grissom by pulling a fresh corned beef sandwich out of his pocket.

An anonymous Slashdot reader writes:
Andrew Chaikin, author of "A Man on the Moon: The Voyages of the Apollo Astronauts", remembers that Young "used to talk about how if we stay on this planet for too long, something's going to get us, whether it was a super volcano or whatever. He really was a true believer." NASA Administrator Robert Lightfoot added that Young's career "spanned three generations of spaceflight; we will stand on his shoulders as we look toward the next human frontier."

In 2012 -- when he was in his 80s -- Young published a memoir titled Forever Young: A Life of Adventure in Air and Space. "My life has been long, and it has been interesting. It's also been a lot of fun, and a lot of hard, challenging work. If I could do it over, I would do it over the very same way.

Three months of research in Antarctica is just the beginning for one Georgia Tech researcher, according to an article shared by schwit1: The waters beneath our planet's ice sheet are fascinating, turning up species few people have ever laid eyes on. But they are not the final target of this chase. Icefin [a 10-foot-long subsea drone] is meant to search for alien life -- a "bug hunt," as some scientists cheerfully call it. It is bound for the icy waters of Jupiter's moon, Europa, possibly as soon as 2030...

The new equipment includes sensors to monitor for organics and measure environmental factors like the presence of dissolved oxygen and levels of acidity, all to see if Europa could (in theory) support life in its subterranean seas... The subsea drone is also smarter than its prototype predecessor, and that high-IQ autonomy would be needed on Europa. The probe must not only operate 400 million miles from Earth but also navigate all by itself under alien ice.

Zorro (Slashdot reader #15,797) quotes the Los Angeles Times: Two bacterial strains that have plagued hospitals around the country may have been at least partly fueled by a sugar additive in our food products, scientists say. Trehalose, a sugar that is added to a wide range of food products, could have allowed certain strains of Clostridium difficile to become far more virulent than they were before, a new study finds. The results, described in the journal Nature, highlight the unintended consequences of introducing otherwise harmless additives to the food supply.
Nearly half a million people were sickened by C. difficile in 2011, when it was directly linked to 15,000 deaths. "The misuse and overuse of antibiotics has long been thought to be responsible for the rise of many kinds of antibiotic-resistant 'superbug'," notes the article, before citing a researcher who now believes "the circumstantial and experimental evidence points to trehalose as an unexpected culprit."