- SpaceX successfully launched a South Korean military satellite into orbit on Monday.
- The mission was historic as it was the first time SpaceX has successfully recovered both halves of its nosecone after launch.
- By snagging the nosecone halves as they fall, the company could save millions of dollars and further shorten the turnaround time between launches.
SpaceX has built a business around its reusable rocket technology. The company saves money and performs more frequent launches thanks to its ability to use boosters multiple times. It’s gotten very, very good at recovering its boosters, but capturing other rocket components has proven more challenging.
In yesterday’s mission to send a South Korean military satellite skyward, the company pulled off something it’s never done before by snagging both halves of its rocket’s nosecone. The two halves — called fairings — are pricey pieces of equipment in their own right, and if SpaceX can make a habit of recovering them, it’ll make subsequent launches that much easier.
The mission itself, which delivered South Korea’s ANASIS-II satellite into orbit, had been previously delayed. It was one of several SpaceX missions that had to be pushed back for a variety of reasons, but the company managed to pull off the launch yesterday and, as an added bonus, made a bit of history for itself along the way.
Recovering rocket boosters is challenging, and SpaceX had many failures along its path to perfecting its technique. Today, the company’s boosters almost always land right where they’re supposed to, and SpaceX can rapidly refurbish them for subsequent trips to space. Catching the nosecone halves is quite a bit more challenging.
The nosecone of the Falcon 9 splits in half to deliver its payloads. Those halves then tumble back down to Earth, and SpaceX has ships with massive nets that do their best to catch them as they fall. However, even with parachutes equipped, the odd shape of the components adds some unpredictability to their descent. Catching them isn’t easy, and SpaceX is usually lucky if it manages to catch just one of the halves.
In a tweet shortly after the Monday launch, SpaceX boss Elon Musk revealed that both halves of the nosecone were recovered by the company’s vessels.
In speaking about the recovery of the company’s nosecones, Musk has thrown out some lofty figures as to their value. Allowing the nosecones to splashdown in the ocean is bad news, as salty seawater can damage sensitive components. He’s claimed that by recovering the nosecones, the company could save millions of dollars.
Along with the nosecones, SpaceX also recovered its Falcon 9 booster, which is basically a given at this point. The company tweeted out a video of the rocket stage landing on a droneship. It’s the 57th time the company has successfully recovered its pricey rocket booster.
For those experiencing homelessness, lives already hanging by a thread 'snapped' by COVID-19, say advocates – CBC.ca
More than a third of Canadians say they’ve been homeless or know someone who has — leading to health problems and even deaths that advocates worry could worsen as encampments multiply during the pandemic.
The Canadian Alliance to End Homelessness says the ranks of people lacking a roof over their head will grow without urgent investments in affordable housing during pandemic recovery and as provincial plans preventing landlords from evicting tenants are lifted.
The Encampment Support Network Toronto, a group of volunteers who check in on people, says the number of encampments in the city has increased, with more than 100 groups of people living in tents during COVID-19. Vancouver, Edmonton and Hamilton have also reported encampments.
In Toronto, encampments popped up after outbreaks of COVID-19 occurred in the city’s homeless shelters. Then, after two-metre physical distancing measures were enforced at shelters, people were provided free, temporary housing in apartments and hotels.
But those weren’t a perfect solution either, said Rev. Leigh Kern of the Anglican Diocese of Toronto.
Temporary housing doesn’t create a stable situation for people, she said, and rules against visitors in hotel rooms, along with scarcer overdose prevention services, could also be contributing to increases in overdose deaths.
Kern handed out her last tent two weeks ago to a man who was just evicted.
“The beds are full so it’s really hard as a worker and as a priest to see people in these dire situations.”
‘I didn’t realize how hard it is’
Last month, Norman Black, 62, became homeless for the first time after he experienced a severe panic attack precipitated by a break down in the computer he uses to keep his mind occupied.
“I lasted five days and nights, and I was losing my mind staring at the walls,” Black recalled.
He moved out to save up for the repair, but he now regrets that decision.
“I didn’t realize how hard it is for homelessness. And now, I’ve looked at eight different rooms [to rent],” he said. “Nobody’s replied. So, I just keep looking.”
Black said a doctor advised he quit his physically demanding job as a city sanitation worker decades ago to ease his anxiety. Social anxiety now makes it difficult for him to tolerate staying in a shelter.
“I can’t handle strangers,” he said.
The interaction triggers symptoms such as dizziness, pressure in his chest and trouble breathing, he said.
In contrast, Black said, he now feels safe with his fellow tent dwellers at Alexandra Park, who call him Pops.
Health suffers without supports
Naheed Dosani, lead doctor with PEACH, or Palliative Education And Care for the Homeless, in Toronto, said COVID-19 has perpetuated inequities for people experiencing homelessness in Canada.
He said it exacerbated their physical and mental health needs when access to social support, drop ins and respite also dropped because of physical distancing requirements.
“What I’ve seen from people experiencing severe and persistent mental illness in our communities is that they were already hanging by a thread before the pandemic and that thread is now snapped,” Dosani said.
Symptoms like depression and psychosis can then worsen.
“What I’ve seen with my own eyes is a strong desire for people who have mental illness to be more connected.”
Instead, he said, people experiencing homelessness have been treated like criminals in parks and public spaces when they have nowhere else to go.
Before COVID-19, Dosani said the average lifespan of those experiencing chronic homelessness ranged from 34 to 47 years.
Puerto Rico's Arecibo Radio Telescope Damaged By Falling Cable – KCCU
A broken cable at Puerto Rico’s Arecibo Observatory has torn a gaping 100-foot hole in the dish of one of the largest radio telescopes in the world, taking the instrument offline until repairs can be made.
Arecibo’s massive reflector dish, which is built inside a sinkhole in northern Puerto Rico, was damaged when a 3-inch diameter support cable unexpectedly snapped before dawn on Monday, according to the University of Central Florida, which manages the observatory.
In a photo of the damage, twisted panels that make up the 1,000-foot dish can be seen hanging from the structure or lying on the ground beneath it.
When the cable fell, it also damaged several panels on the Gregorian Dome that is suspended above the dish and houses sensitive receivers to collect signals from space.
“We have a team of experts assessing the situation,” Francisco Cordova, director of the observatory, said in a statement emailed to NPR. “Our focus is assuring the safety of our staff, protecting the facilities and equipment, and restoring the facility to full operations as soon as possible, so it can continue to assist scientists around the world.”
The statement said it is not yet clear what caused the cable to break and it did not give a timetable for repairs.
In an email to NPR, Ramon Lugo III, director of the University of Central Florida’s Florida Space Institute, said that “the removal of the damaged cable and the procurement of a cable to replace the damaged cable” were under assessment.
“We are also working on a determination of the cause of this failure, including non-destructive testing of the remaining cables,” he said, adding that after a full assessment, “we will develop a recovery plan, schedule and budget.”
Since its completion in 1963, Arecibo has played a key role in discoveries ranging from new insights into pulsars to detecting planets outside our solar system. It has figured prominently in the Search for Extraterrestrial Intelligence, or SETI. The observatory was also featured in the film Contact and the James Bond movie GoldenEye.
The observatory held the record for the world’s largest radio telescope until 2016 when an even larger instrument of similar design, known as the Five-hundred-meter Aperture Spherical Radio Telescope, was completed in southern China. After testing, FAST officially went online last year.
In 2017, one of Arecibo’s much smaller dishes and a few panels on the main dish were damaged when Category 4 Hurricane Maria raked the island.
Top tips for watching the Perseid meteor shower, which peaks Aug. 11 and 12 – ThePeterboroughExaminer.com
This year’s Perseid meteor shower is expected to peak overnight on Tuesday into Wednesday morning with streaks of shooting stars running across the night sky.
The Canadian Space Agency says that “during the peak, typically in the darkest hours after midnight, up to 50 to 80 meteors per hour can streak across the sky.”
To get an even better view, the agency says to “look up at the sky between moonset and dawn to see the most meteors of the night.”
The Perseids peak every August as the Earth passes through the debris trail of the Comet Swift-Tuttle.
Perseid is the champion of meteors, with more fireballs than those of any other comet, NASA’s research has revealed.
The CSA says that the Perseids take their name from the constellation Perseus because “they appear to fall right from it.
“Right before dawn, when we see the most meteors, Perseus is at its highest point in the sky. The constellation was catalogued by the Greek astronomer Ptolemy and named after the Greek mythological hero Perseus.”
In 2016, Leslieville resident and Etobicoke native Adam Evans offered these tips to skywatchers who want to take in the Perseid meteor shower:
1. Get out whenever you can.
“If you’re not keen to get up at 5 a.m., you might see a few things in the night sky.”
2. Suppress the instinct to go out and buy a telescope.
“You can take photos of space with a decent SLR camera. Try using a long lens on a tripod.”
3. Before you buy a camera, buy a good pair of binoculars.
“Binoculars are cheap, portable and as good as a small telescope.”
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4. Astronomy is for everyone.
“There’s always something to see … It’s a buffet … I’m taking high-resolution photographs. But astronomy is pretty accessible to people with binoculars or just the naked eye. Right now, Saturn and Mars are visible at sunrise.”
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