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SpaceX Launches Second Supersized ‘Falcon’ Heavy Rocket, For the First Time Lands all Three Boosters
SpaceX launched its second supersized rocket and for the first time landed all three boosters Thursday, a year after sending up a sports car on the initial test flight.
The new and improved Falcon Heavy thundered into the early evening sky with a communication satellite called Arabsat, the rocket’s first paying customer. The Falcon Heavy is the most powerful rocket in use today, with 27 engines firing at liftoff — nine per booster.
Eight minutes after liftoff, SpaceX landed two of the first-stage boosters back at Cape Canaveral, side by side, just like it did for the rocket’s debut last year. The core booster landed two minutes later on an ocean platform hundreds of miles offshore. That’s the only part of the first mission that missed.
“What an amazing day,” a SpaceX flight commentator exclaimed. “Three for three boosters today on Falcon Heavy, what an amazing accomplishment.”
Launch from Apollo pad
The Falcon Heavy soared from NASA’s Kennedy Space Center, using the same pad that shot Apollo astronauts to the moon a half-century ago and later space shuttle crews.
Prime viewing spots were packed with tourists and locals eager to catch not just the launch but the rare and dramatic return of twin boosters, accompanied by sonic booms. The roads were also jammed for Wednesday night’s launch attempt, which was scuttled by high wind.
Because this was an upgraded version of the rocket with unproven changes, SpaceX chief Elon Musk cautioned in advance things might go wrong. But everything went exceedingly well. SpaceX employees at company headquarters in Southern California cheered every launch milestone and especially the three touchdowns.
“The Falcons have landed,” Musk said in a tweet that included pictures of all three boosters.
Tesla Roadster still in orbit
Musk put his own Tesla convertible on last year’s demo. The red Roadster, with a mannequin, dubbed Starman, likely still at the wheel, remains in a solar orbit stretching just past Mars.
The Roadster is thought to be on the other side of the sun from us right now, about three-quarters of the way around its first solar orbit, said Jon Giorgini, a senior analyst at NASA’s Jet Propulsion Laboratory in Pasadena, California.
A couple dozen ground telescopes kept tabs on the car during its first several days in space, but it gradually faded from view as it headed out toward the orbit of Mars, Giorgini added.
The Roadster could still look much the same as it did for the Feb. 6, 2018, launch, just not as shiny with perhaps some chips and flakes from the extreme temperature swings, according to Giorgini. It will take decades if not centuries for solar radiation to cause it to decompose, he said.
Air Force mission next
SpaceX plans to launch its next Falcon Heavy later this year on a mission for the U.S. Air Force. The boosters for that flight may be recycled from this one.
NASA Administrator Jim Bridenstine last month suggested possibly using a Falcon Heavy, and another company’s big rocket, to get the space agency’s Orion capsule around the moon, minus a crew, in 2020. But the preferred method remains NASA’s own Space Launch System mega rocket, if it can be ready by then.
Bridenstine said everything is on the space table as NASA strives to meet the White House’s goal of landing astronauts back on the moon by 2024. NASA’s Saturn V rockets, used for the Apollo moon shots, are the all-time launch leaders so far in size and might.
SpaceX typically launches Falcon 9 rockets. The Falcon Heavy is essentially three of those single rockets strapped together.
Until SpaceX came along, boosters were discarded in the ocean after satellite launches. The company is intent on driving down launch costs by recycling rocket parts. (VOA)
The US researchers have discovered a class of immune cells that plays a role in miscarriage, which affects about a quarter of pregnancies.
Researchers at the University of California-San Francisco found that the recently discovered subset of cells known as extrathymic Aire-expressing cells in the immune system may prevent the mother's immune system from attacking the placenta and fetus.
The researchers showed that pregnant mice who did not have this subset of cells were twice as likely to miscarry, and in many of these pregnancies fetal growth was severely restricted.
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"When you're pregnant, the immune system is seeing the placenta for the first time in decades -- not since the mother made a placenta when she herself was a fetus," said Eva Gillis-Buck, from UCSF.
"Our research suggests that this subset of immune cells is carrying out a sort of 'secondary education' -- sometimes many years after the better-known population of the educator cells have carried out the primary education in the thymus -- teaching T cells not to attack the fetus, the placenta and other tissues involved in pregnancy," she added. The findings are published in the journal Science Immunology.
The immune system has to be educated not to attack one's own tissues and organs to prevent autoimmune disease. But pregnancy presents a unique challenge since the fetus expresses proteins found in the placenta as well as proteins whose genetics are distinct from the mother.
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"It was a conceptual leap to link Aire-expressing cells, which are critical for preventing autoimmune disease, to pregnancy," said Tippi Mackenzie, Professor of Surgery at UCSF's Center for Maternal Foetal Precision Medicine.
In the thymus, Aire-expressing cells begin interacting with other immune cells very early in life to teach them what not to attack. The thymus begins to shrink and is nearly gone by adulthood, by which time most immune cells have been educated. But as the thymus shrinks, the population of eTACs in lymph nodes and the spleen expands, the researchers explained.
The study suggests a healthy pregnancy may depend on having these cells around, they added. (IANS/KB)
The tiny emojis being shared on billions of devices worldwide can play a major role in digital communication, with most people saying that emoji compels them to feel more empathy towards others, according to an Adobe report.
Adobe's global emoji study found that emoji even helps people overcome language barriers and form connections that would otherwise be difficult to do.
"We were surprised and delighted by the discoveries made in the survey, most notably how enthusiastic respondents were for emoji as a means to express themselves," the company said in a statement.
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Emojis sometimes get criticized for being overly saccharine, but this sweetness is key when it comes to diffusing some of the heaviness of online communication.
"Many of the emoji are focused on positive emotions, so it's easy to insert them into our conversations and lighten the mood," the Adobe study said.
It's not surprising that over half of those surveyed feel more comfortable using emojis than talking on the phone or in person.
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This applies to less intense situations too. Dating, for example, can be tricky — especially when it's online or via digital apps, as it often is now.
The study also found that emoji even helps people overcome language barriers and form connections that would otherwise be difficult to do.
In celebration of World Emoji Day on Saturday, Adobe's '2021 Global Emoji Trend Report' surveyed 7,000 people in the US, the UK, Germany, France, Japan, Australia, and South Korea. (IANS/KB)
Following the grand Richard Branson show where he carried Andhra Pradesh-born Sirisha Bandla and fellow space travelers on his shoulders after successfully flying to the edge of space, it is time for Amazon Founder Jeff Bezos to applaud Sanjal Gavande, one of the key engineers who designed the New Shephard rocket set to take Bezos and the crew to space on July 20.
Billionaire Bezos is set to fly to the edge of space aboard what is touted as the world's first unpiloted suborbital flight. Born in Kalyan, Maharashtra, Gavande is a systems engineer at Blue Origin who always dreamt of designing aerospace rockets.
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After completing Bachelor's in mechanical engineering from the University of Mumbai, she flew to the US in 2011 to pursue a Master's in mechanical engineering from the Michigan Technological University. She also applied for an engineering job at the US space agency NASA but finally landed her dream job at Blue Origin
Sirisha flew to the US in 2011 to pursue a Master's in mechanical engineering from the Michigan Technological University.IANS
Bezos, his brother Mark, aviation pioneer Mary Wallace 'Wally' Funk, and other passengers are set to liftoff from west Texas and travel just beyond the edge of space on July 20. Blue Origin announced this week that Oliver Daemen, an 18-year-old high school graduate from the Netherlands, would join the crew.
Oliver is the son of millionaire Joe Daemen, Founder, and CEO of the Dutch investment company Somerset Capital Partners. Blue Origin, however, did not reveal how much Daemen paid for his son's trip to space. Bezos chose July 20 as the launch date to honor the 52nd anniversary of the Apollo 11 moon landing.
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The launch site for Blue Origin's first human flight will be in a remote location north of Van Horn, Texas, from where the firm had launched New Shepard for previous flights. Blue Origin has received final approval from the Federal Aviation Administration (FAA) to carry humans on the New Shepard rocket into space.
On July 12, Bandla touched the edge of space with three others, including Virgin Galactic's billionaire CEO Richard Branson. Bandla vaulted into space onboard VSS Unity 22. After the successful spaceflight, Branson carried the Indian-American on his shoulders while celebrating their flight to space, at Spaceport America in New Mexico. (IANS/KB)