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NASA Spacecraft’s First Orbit Around Asteroid Bennu Breaks Record

The OSIRIS-REx mission is scheduled to deliver the sample to Earth in September 2023

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Nasa's Opportunity rover might have 'died' on Mars. Flickr

Breaking a space exploration record on New Year’s Eve, NASA first asteroid-sampling mission, OSIRIS-REx, entered into orbit around the Bennu, making it the smallest object ever to be orbited by a spacecraft.

Inching around the asteroid at a snail’s pace, OSIRIS-REx’s first orbit marks a leap for humankind.

Never before has a spacecraft from Earth circled so close to such a small space object – one with barely enough gravity to keep a vehicle in a stable orbit.

The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) arrived at asteroid Bennu on December 3.

The spacecraft, 110 million kilometres away, carried out a single, eight-second burn of its thrusters on Monday.

“The team continued our long string of successes by executing the orbit-insertion maneouvre perfectly,” said Dante Lauretta, OSIRIS-REx Principal Investigator at the University of Arizona, Tucson, US.

“With the navigation campaign coming to an end, we are looking forward to the scientific mapping and sample site selection phase of the mission,” Lauretta added.

“Entering orbit around Bennu is an amazing accomplishment that our team has been planning for years,” Lauretta said.

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Inching around the asteroid at a snail’s pace, OSIRIS-REx’s first orbit marks a leap for humankind. Flcikr

Now, the spacecraft will circle Bennu about a 1.75 kilometres from its centre, closer than any other spacecraft has come to its celestial object of study.

Previously the closest orbit of a planetary body was in May 2016, when the Rosetta spacecraft orbited about seven kilometres from the centre of the comet 67P/Churyumov-Gerasimenko.

The spacecraft is scheduled to orbit Bennu through mid-February at a leisurely 62 hours per orbit.

The December 31 manoeuvre to place the spacecraft into orbit about Bennu is the first of many exciting navigation activities planned for the mission.

The OSIRIS-REx team will resume science operations in late February.

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At that point, the spacecraft will perform a series of close flybys of Bennu for several months to take high-resolution images of every square inch of the asteroid to help select a sampling site.

During the summer of 2020, the spacecraft will briefly touch the surface of Bennu to retrieve a sample.

The OSIRIS-REx mission is scheduled to deliver the sample to Earth in September 2023. (IANS)

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SpaceX Plans To Send NASA Astronauts To Space in Q2 This Year

As part of the test on Sunday, SpaceX configured Crew Dragon to trigger a launch escape about 1.5 minutes after liftoff

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NASA
It took a lot of work between NASA and SpaceX to get to this point. Pixabay

After NASA and SpaceX successfully completed a launch escape demonstration of the company’s Crew Dragon spacecraft and Falcon 9 rocket, Elon Musk said that his aerospace company aims to send NASA astronauts to space between April and June this year.

This was the final major flight test of the spacecraft before it begins carrying astronauts to the International Space Station (ISS) under NASA’s Commercial Crew Programme, the US space agency said in a statement on Sunday.

With this test now complete, the next big flight of the Crew Dragon will have people on board: NASA astronauts Bob Behnken and Doug Hurley.

“We’re highly confident that the hardware will be ready in Q1, most likely at the end of February but no later than March. And we think it appears probable that the first crewed launch would occur in the second quarter,” said Musk after the successful uncrewed test of its Crew Dragon capsule’s in-flight launch escape capabilities.

Musk said that if all goes well, the first crewed flight on the Crew Dragon could take place in the second quarter of this year.

“This critical flight test puts us on the cusp of returning the capability to launch astronauts in American spacecraft on American rockets from American soil,” said NASA Administrator Jim Bridenstine. “We are thrilled with the progress NASA’s Commercial Crew Programme is making and look forward to the next milestone for Crew Dragon.”

As part of the test on Sunday, SpaceX configured Crew Dragon to trigger a launch escape about 1.5 minutes after liftoff. All major functions were executed, including separation, engine firings, parachute deployment and landing. Crew Dragon splashed down at 10:38 am just off the Florida coast in the Atlantic Ocean.

“As far as we can tell thus far, it’s a picture perfect mission. It went as well as one can possibly expect,” said Musk. “This is a reflection of the dedication and hard work of the SpaceX and NASA teams to achieve this goal. Obviously, I’m super fired up. This is great.”

NASA
After NASA and SpaceX successfully completed a launch escape demonstration of the company’s Crew Dragon spacecraft and Falcon 9 rocket, Elon Musk said that his aerospace company aims to send NASA astronauts to space between April and June this year. Wikimedia Commons

Prior to the flight test, teams completed launch day procedures for the first crewed flight test, from suit-up to launch pad operations. The joint teams now will begin the full data reviews that need to be completed prior to NASA astronauts flying the system during SpaceX’s Demo-2 mission. “The past few days have been an incredible experience for us,” said astronaut Doug Hurley.

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“Today, we watched the demonstration of a system that we hope to never use, but can save lives if we ever do. It took a lot of work between NASA and SpaceX to get to this point, and we can’t wait to take a ride to the space station soon,” he said in the NASA statement. (IANS)