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Washington DC (UPI) Jan 5, 2021
A Russian rocket is expected to re-enter Earth's atmosphere Wednesday in an uncontrolled descent. Much of the rocket is expected to burn up as it plunges through the atmosphere, so there likely will not be major damage when it hits. According to Russia's state-run TASS news agency, the Angara-A5 heavy-lift rocket was launched Dec. 27 to test the Persei booster. The Europea
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Beijing (XNA) Jan 10, 2022
The Shenzhou XIII astronauts in China's space station core module have completed the manual rendezvous and docking experiment with the Tianzhou 2 cargo craft, the China Manned Space Agency (CMSA) said Saturday. At the beginning of the experiment, the astronauts in the core module teleoperated the Tianzhou 2 cargo craft to leave the front docking port of the core module's node cabin and mov

Sol 3349: Ridges, Big and Small

Sunday, 09 January 2022 08:30
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Pasadena CA (JPL) Jan 07, 2022
Another successful drive on Mars resulted in a dusty bedrock workspace with nodules and small raised ridges in front of the rover. Curiosity also has a view towards larger scale, dark, resistant ridges that we have noticed within the more subdued and lighter coloured, more typical bedrock in this area. The science team decided to investigate the chemistry and texture of one of the small, r

Sending Life to the Stars

Sunday, 09 January 2022 08:30
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Santa Barbara CA (SPX) Jan 07, 2022
No longer solely in the realm of science fiction, the possibility of interstellar travel has appeared, tantalizingly, on the horizon. Although we may not see it in our lifetimes - at least not some real version of the fictional warp-speeding, hyperdriving, space-folding sort - we are having early conversations of how life could escape the tether of our solar system, using technology that is with
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Birmingham UK (SPX) Jan 07, 2022
A mission to one of the coldest and most remote places on earth will enable a new phase in the search for distant planetary systems. University of Birmingham PhD researcher Georgina Dransfield has travelled to the Franco-Italian Concordia Research Station in Antarctica, to oversee the installation of a new state-of-the-art camera at the ASTEP (Antarctic Search for Transiting ExoPlanets) telescop
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Pohang, South Korea (SPX) Jan 01, 2022
While the entire world focuses on achieving carbon neutrality - zero carbon dioxide (CO2) emissions - a new research shows climate change in some regions is inevitable even if the already increased CO2 level is reduced. As CO2 decreases, the intertropical convergence zone (ITCZ) shifts southwards, which can trigger persistent El Nino conditions. El Nino refers to a phenomenon in which the sea su

Bringing the Sun into the lab

Sunday, 09 January 2022 08:30
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Dresden, Germany (SPX) Jan 04, 2022
Why the Sun's corona reaches temperatures of several million degrees Celsius is one of the great mysteries of solar physics. A "hot" trail to explain this effect leads to a region of the solar atmosphere just below the corona, where sound waves and certain plasma waves travel at the same speed. In an experiment using the molten alkali metal rubidium and pulsed high magnetic fields, a team from t
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Space telescope's 'golden eye' opens, last major hurdle
NASA James Webb Space Telescope Project Manager Bill Ochs monitors the progress of the observatory's second primary mirror wing as it rotates into position, Saturday, Jan.

NASA completes major JWST deployments

Saturday, 08 January 2022 18:15
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JWST

The primary mirror of NASA’s James Webb Space Telescope unfolded into place Jan. 8, completing the major steps in the post-launch deployment of the giant observatory.

SpaceNews

Webb deployment complete

Saturday, 08 January 2022 18:00
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Deployment test of James Webb Space Telescope's primary mirror

Today the James Webb Space Telescope team successfully fully deployed its iconic 6.4-metre, gold-coated primary mirror, completing the final stage of all major spacecraft deployments to prepare for science operations.

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NASA’s James Webb Space Telescope team fully deployed its 21-foot, gold-coated primary mirror, successfully completing the final stage of all major spacecraft deployments to prepare for science operations.
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Sidus Space became a public company in December to help transform the Space Coast government contractor into a commercial satellite constellation operator. SpaceNews interviewed Sidus Space CEO Carol Craig, who became the first woman owner-founder of a space company to go public, to learn more about the plans as its first satellite aims to launch late this year.

Webb's primary mirror deployment has begun

Friday, 07 January 2022 19:47
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James Webb Space Telescope
Credit: Pixabay/CC0 Public Domain

Engineers have begun the final stage of Webb's major structural deployments: the unfolding of its two primary mirror wings. These side panels, which were folded back for launch, each hold three of the observatory's 18 hexagonal, gold-coated mirror segments.

The team is beginning today with the mirror wing on the port (left) side of the observatory. Engineers must first release mechanisms that held the wing in place for launch, in order to allow the wing to deploy. The panel then rotates into position, a motor-driven process that takes about five minutes. Once the wing is extended, engineers begin a meticulous, two-hour process to securely latch it into place.

The deployment of the second primary mirror wing, planned for tomorrow, will follow the same process.



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Citation: Webb's primary mirror deployment has begun (2022, January 7) retrieved 7 January 2022 from https://phys.org/news/2022-01-webb-primary-mirror-deployment-begun.html
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Our galaxy's most recent major collision

Friday, 07 January 2022 16:50
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Our galaxy’s most recent major collision
A photograph of the Small Magellanic Cloud, a nearby dwarf galaxy that is merging with the Milky Way.

Why doesn't Webb have deployment cameras?

Friday, 07 January 2022 14:32
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Why doesn't Webb have deployment cameras?
Credit: NASA's James Webb Space Telescope from Greenbelt, MD, USA, CC BY 2.0

As NASA's James Webb Space Telescope makes its way out to its intended orbit, ground teams monitor its vitals using a comprehensive set of sensors located throughout the entire spacecraft. Mechanical, thermal, and electrical sensors provide a wide array of critical information on the current state and performance of Webb while it is in space.

A system of surveillance cameras to watch deployments was considered for inclusion in Webb's toolkit of diagnostics and was studied in-depth during Webb's design phase, but ultimately, this was rejected.

"Adding cameras to watch an unprecedently complicated deployment of such a precious spacecraft as Webb sounds like a no-brainer, but in Webb's case, there's much more to it than meets the eye," said Paul Geithner, deputy project manager—technical for the Webb telescope at NASA's Goddard Space Flight Center. "It's not as straightforward as adding a doorbell cam or even a rocket cam."

First of all, Webb is big, undergoes many configuration changes during deployment, and has many specific locations of import to deployment.

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