A historic SpaceX launch is set to take place on Wednesday, marking a milestone in human spaceflight for the United States as the first all-American flight into orbit since 2011.
NASA said in a statement on Friday that astronauts Robert Behnken and Douglas Hurley will fly aboard the space agency’s SpaceX Demo-2 test flight to and from the International Space Station (ISS) at 4:33 p.m. ET.
Weather conditions initially stood in the way, but the forecast in Florida is improving for the launch. Late Tuesday, the odds of acceptable launch weather improved to 60 per cent.
According to the NASA, Behnken and Hurley were among the first astronauts to begin working and training on SpaceX’s next-generation human space vehicle and were selected for their “extensive test pilot and flight experience, including several missions on the space shuttle.”
The launch will be the Falcon 9 rocket’s second spaceflight test, but its first with astronauts on board. It is slated to lift-off out of Launch Complex 39A at the NASA Kennedy Space Center in Florida.
“Excitement will be felt across the country and around the world,” the statement read.
NASA said the flight test will provide data on “the performance of the Falcon 9 rocket, the Crew Dragon and ground systems, as well as in-orbit, docking, and landing operations.”
It’s the final test for the privately-owned space company’s flight system. If successful, it will be certified by NASA for operational crew missions to and from the ISS.
Once certified, SpaceX said in a release last month NASA astronauts Victor Glover, Mike Hopkins, Shannon Walker and JAXA astronaut Soichi Noguchi have been assigned to fly on Dragon’s first six-month operational mission targeted for later this year.
It noted the Dragon was the first U.S. spacecraft to autonomously dock with the ISS and return to Earth safely after successfully completing an end-to-end test without NASA astronauts on board in March.
Source: – Globalnews.ca
Edited By Harry Miller
NASA probe leaking asteroid samples due to jammed door – Al Jazeera English
Images beamed back to ground control revealed it caught more material than scientists anticipated and was spewing excess of flaky asteroid rocks into space.
A US probe that collected a sample from an asteroid earlier this week retrieved so much material that a rock is wedged in the container door, allowing rocks to spill back out into space.
On Tuesday, the robotic arm of the probe, OSIRIS-REx, kicked up a debris cloud of rocks on Bennu, a skyscraper-sized asteroid some 320 million kilometres (200 million miles) from Earth and trapped the material in a collection device for the return to Earth.
But images of the spacecraft’s collection head beamed back to ground control revealed it had caught more material than scientists anticipated and was spewing an excess of flaky asteroid rocks into space.
The leakage had the OSIRIS-REx mission team scrambling to stow the collection device to prevent additional spillage.
“Time is of the essence,” Thomas Zurbuchen, NASA’s associate administrator for science, told reporters on Friday.
Zurbuchen said mission teams will skip their chance to measure how much material they collected as originally planned and proceed to the stow phase, a fragile process of tucking the sample collection container in a safe position within the spacecraft without jostling out more valuable material.
Good news: on Oct. 20, our @OSIRISREx spacecraft captured more than enough material from asteroid Bennu to meet mission requirements! The team is now focused on stowing the sample for return to Earth in 2023: https://t.co/4etvnJzXfn #ToBennuAndBack pic.twitter.com/ILUzEJZHD8
— NASA (@NASA) October 23, 2020
NASA will not know how much material it collected until the sample capsule returns in 2023.
The troubleshooting also led mission leaders to forgo any more chances of redoing a collection attempt and instead commit to begin next March the spacecraft’s return to Earth.
“Quite honestly, we could not have performed a better collection experiment,” OSIRIS-REx’s principal investigator Dante Lauretta said.
But with the door lodged open by a rock and the “concerning” images of sample spillage, “we’re almost the victim of our own success here”, he added.
The roughly $800m, minivan-sized OSIRIS-REx spacecraft, built by Lockheed Martin, launched in 2016 to grab and return the first US sample of pristine asteroid materials.
Asteroids are among the leftover debris from the solar system’s formation some 4.5 billion years ago.
A sample could hold clues to the origins of life on Earth, scientists say.
Asteroid samples escaping from jammed NASA spacecraft – Phys.org
A NASA spacecraft is stuffed with so much asteroid rubble from this week’s grab that it’s jammed open and precious particles are drifting away in space, scientists said Friday.
Scientists announced the news three days after the spacecraft named Osiris-Rex briefly touched asteroid Bennu, NASA’s first attempt at such a mission.
The mission’s lead scientist, Dante Lauretta of the University of Arizona, said Tuesday’s operation 200 million miles away collected far more material than expected for return to Earth—in the hundreds of grams. The sample container on the end of the robot arm penetrated so deeply into the asteroid and with such force, however, that rocks got sucked in and became wedged around the rim of the lid.
Scientists estimate the sampler pressed as much as 19 inches (48 centimeters) into the rough, crumbly, black terrain.
“We’re almost a victim of our own success here,” Lauretta said at a hastily arranged news conference.
Lauretta said there is nothing flight controllers can do to clear the obstructions and prevent more bits of Bennu from escaping, other than to get the samples into their return capsule as soon as possible.
So, the flight team was scrambling to put the sample container into the capsule as early as Tuesday—much sooner than originally planned—for the long trip home.
“Time is of the essence,” said Thomas Zurbuchen, chief of NASA’s science missions.
This is NASA’s first asteroid sample-return mission. Bennu was chosen because its carbon-rich material is believed to hold the preserved building blocks of our solar system. Getting pieces from this cosmic time capsule could help scientists better understand how the planets formed billions of years ago and how life originated on Earth.
Scientists were stunned—and then dismayed—on Thursday when they saw the pictures coming from Osiris-Rex following its wildly successful touch-and-go at Bennu two days earlier.
A cloud of asteroid particles could be seen swirling around the spacecraft as it backed away from Bennu. The situation appeared to stabilize, according to Lauretta, once the robot arm was locked into place. But it was impossible to know exactly how much had already been lost.
The requirement for the $800 million-plus mission was to bring back a minimum 2 ounces (60 grams).
Regardless of what’s on board, Osiris-Rex will still leave the vicinity of the asteroid in March—that’s the earliest possible departure given the relative locations of Earth and Bennu. The samples won’t make it back until 2023, seven years after the spacecraft rocketed away from Cape Canaveral.
Osiris-Rex will keep drifting away from Bennu and will not orbit it again, as it waits for its scheduled departure.
Because of the sudden turn of events, scientists won’t know how much the sample capsule holds until it’s back on Earth. They initially planned to spin the spacecraft to measure the contents, but that maneuver was canceled since it could spill even more debris.
“I think we’re going to have to wait until we get home to know precisely how much we have,” Lauretta told reporters. “As you can imagine, that’s hard. … But the good news is we see a lot of material.”
Japan, meanwhile, is awaiting its second batch of samples taken from a different asteroid, due back in December.
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Two flights into Abbotsford have had recent COVID-19 exposures – Maple Ridge News
Two flights to Abbotsford have each had a recent COVID-19 exposure, according to the B.C. Centre for Disease Control (CDC).
The agency indicates on its website that the flights involved were WestJet flight 637 from Calgary to Abbotsford on Wednesday, Oct. 14 (rows nine to 15) and Swoop flight 107 from Hamilton to Abbotsford on Monday, Oct. 19 (rows 20 to 26).
The CDC advises that anyone who was on these flights should self-monitor for symptoms for 14 days.
Passengers on domestic flights are not required to self-isolate, but those who have travelled outside of Canada are required to self-isolate for 14 days upon their arrival.
Passengers seated on a plane with a case of COVID-19 that was later identified are no longer directly notified of their potential exposure. Instead, anyone who has travelled is asked to monitor the CDC website.
Passengers seated in the affected rows are considered to be at higher risk of exposure due to their proximity to the case.
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