SpaceX’s Falcon Heavy rocket soars in debut test launch from Florida
SpaceX’s Falcon Heavy rocket soars in debut test launch from Florida
The 23-story-tall jumbo rocket, carrying a cherry red Tesla Roadster from the assembly line of Musk’s electric car company as a mock payload, thundered off its launchpad in billowing clouds of steam and rocket exhaust at 3:45pm from the Kennedy Space Center in Cape Canaveral.
Boisterous cheering could be heard from SpaceX workers at the company’s headquarters in Hawthorne, California, where a livestream feed of the event originated. At least 2,000 spectators cheered the blastoff from a campground near Cocoa Beach, 8 kilometers from the space center.
Within three minutes, the Falcon Heavy’s two side boosters separated from the central rocket in one of the most critical points of the flight.
Then, capitalizing on cost-cutting reusable rocket technology pioneered by SpaceX, the two boosters flew themselves back to Earth for safe simultaneous touchdowns on twin landing pads at Cape Canaveral Air Force Station, about eight minutes after launch. Each rocket unleashed a double sonic boom as it neared the landing zone.
The center booster rocket, which SpaceX had predicted was less likely to be salvaged, slammed into the Atlantic at about 483 kilometers per hour, destroying two of its thrusters and showering the deck of the nearby drone landing vessel, Musk told a post-launch news conference.
Still, the Silicon Valley mogul known for self-deprecating understatement hailed the launch as a victory and “a big relief.”
“I had this image of this giant explosion on the pad, with wheels bouncing down the road and the logo landing somewhere with a thud. But fortunately, that’s not what happened,” he said. “Crazy things come true.”
While the Falcon Heavy’s initial performance appeared, by all accounts, to have been near flawless, it remained to be seen whether the upper stage of the vehicle and its payload would survive a six-hour “cruise” phase to high Earth orbit through the planet’s radiation belts.
The launch, so powerful that it shook the walls of the press trailer at the complex, was conducted from the same site used by NASA’s towering Saturn 5 rockets to carry Apollo missions to the moon more than 40 years ago. SpaceX has said it aspires to send missions to Mars in the coming years.
The successful liftoff was a key turning point for Musk’s privately owned Space Exploration Technologies, which stands to gain a new edge over the handful of rivals vying for lucrative contracts with NASA, satellite companies and the US military.
Falcon Heavy is designed to place up to 70 tons into standard low-Earth orbit at a cost of $90 million per launch. That is twice the lift capacity of the biggest existing rocket in America’s space fleet — the Delta 4 Heavy of rival United Launch Alliance, a partnership of Lockheed Martin and Boeing — for about a fourth the cost.
The demonstration flight put the Heavy into the annals of spaceflight as the world’s most powerful rocket in operation, with more lift capacity than any space vehicle to fly since NASA’s Saturn 5, which was retired in 1973, or the Soviet-era Energia, which flew its last mission in 1988.
Propelled by 27 rocket engines, the Heavy packs more than 5 million pounds of thrust at launch, roughly three times the force of the Falcon 9 booster rocket that until now has been the workhorse of the SpaceX fleet. The new rocket is essentially constructed from three Falcon 9s bolted together side by side.
Going along for the ride in a bit of playful cross-promotional space theater was the sleek red, electric-powered sports car from Musk’s other transportation enterprise, Tesla.
The Tesla Roadster is supposed to be sent into solar orbit, on a path taking it as far from Earth as Mars. Adding to the whimsy, SpaceX planted a space-suited mannequin in the driver’s seat of the convertible.
Musk mused that “it may be discovered by some future alien race.” The white spacesuit was real, he said.
Study: Smokers better off quitting, even with weight gain
- Quitters saw their risk of diabetes increase by 22 percent in the six years after they kicked the habit
- The people enrolled in the studies were all health professionals, and did not mirror current smokers in the general population, who are disproportionately low-income, less-educated and more likely to smoke heavily
NEW YORK: If you quit smoking and gain weight, it may seem like you’re trading one set of health problems for another. But a new US study finds you’re still better off in the long run.
Compared with smokers, even the quitters who gained the most weight had at least a 50 percent lower risk of dying prematurely from heart disease and other causes, the Harvard-led study found.
The study is impressive in its size and scope and should put to rest any myth that there are prohibitive weight-related health consequences to quitting cigarettes, said Dr. William Dietz, a public health expert at George Washington University.
“The paper makes pretty clear that your health improves, even if you gain weight,” said Dietz, who was not involved in the research. “I don’t think we knew that with the assurance that this paper provides.”
The New England Journal of Medicine published the study Wednesday. The journal also published a Swedish study that found quitting smoking seems to be the best thing diabetics can do to cut their risk of dying prematurely.
The nicotine in cigarettes can suppress appetite and boost metabolism. Many smokers who quit and don’t step up their exercise find they eat more and gain weight — typically less than 10 pounds (4.5 kilograms), but in some cases three times that much.
A lot of weight gain is a cause of the most common form of diabetes, a disease in which blood sugar levels are higher than normal. Diabetes can lead to problems including blindness, nerve damage, heart and kidney disease and poor blood flow to the legs and feet.
In the US study, researchers tracked more than 170,000 men and women over roughly 20 years, looking at what they said in health questionnaires given every two years.
The people enrolled in the studies were all health professionals, and did not mirror current smokers in the general population, who are disproportionately low-income, less-educated and more likely to smoke heavily.
The researchers checked which study participants quit smoking and followed whether they gained weight and developed diabetes, heart disease or other conditions.
Quitters saw their risk of diabetes increase by 22 percent in the six years after they kicked the habit. An editorial in the journal characterized it as “a mild elevation” in the diabetes risk.
Studies previously showed that people who quit have an elevated risk of developing diabetes, said Dr. Qi Sun, one the study’s authors. He is a researcher at the Harvard-affiliated Brigham and Women’s Hospital.
But that risk doesn’t endure, and it never leads to a higher premature death rate than what smokers face, he said.
“Regardless of the amount of weight gain, quitters always have a lower risk of dying” prematurely, Sun said.