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Started by Alberon, December 24, 2021, 12:17:20 AM
Quote from: Johnny Foreigner on December 24, 2021, 01:00:58 AMThey'll never make a sufficiently long cable.
Quote from: idunnosomename on December 24, 2021, 01:04:41 AMalso isnt James Webb a nonce or something
Quote from: mothman on December 24, 2021, 01:24:33 AMI didn't realise it was going to be at a Lagrange point. Is this the first time anything has ever been sited there?
Quote from: Fr.Bigley on December 24, 2021, 09:10:25 AMI'd use it to spy on some high quality alien tits
Quote from: Replies From View on December 24, 2021, 09:26:44 AMWould you settle for low quality
Quote from: Fr.Bigley on December 24, 2021, 10:02:08 AMIf there were three of them, like in total recall.
Quote from: Replies From View on December 24, 2021, 10:24:53 AMWhat if it was just one really awful one
Quote"For most missions, launch contributes the majority of mission risk," explained Thomas Zurbuchen, the associate administrator for science missions at NASA. "If the spacecraft is in space, most risk is behind us."However, there are exceptions to this rule, Zurbuchen explained in a new blog post for the space agency. For the Mars Perseverance mission launched last summer, for example, only about 10 to 20 percent of the mission's risk was retired once the spacecraft reached orbit. The remainder lay ahead of the vehicle, particularly with its daring landing on Mars, and then performing a technically challenging sample acquisition and analysis.The $10 billion James Webb Space Telescope, due to launch on a European Ariane 5 rocket late this year, offers an even more extreme example. In his blog post, Zurbuchen offers a frank and revealing analysis of Webb's launch and assessment of the risks.Once in space, Webb will need to travel about 1.5 million km from Earth to the L2 Lagrange Point beyond the Moon where it will be able to maintain a stable position without using much on-board propulsion. Along the way, and once there, some 50 deployments of the large, folded-up telescope will be necessary to prepare for scientific observations. This process will involve nearly 350 single-point failures, and if something goes wrong, it would scuttle the deployment without hope of repair. The number of single-point failures for Webb, by comparison, is a factor of three greater than the seven-minute landing of Perseverance on Mars.It will take about three weeks to deploy Webb, and scientists will be on edge the entire time, Zurbuchen said.
Quote from: touchingcloth on December 24, 2021, 12:34:01 AMIt's worth pointing out that it's going to be really far from earth. The ISS is at 420km, Hubble at 540km, the moon at 400,000km, but JWST will be at 1,500,000km.
Quote from: shoulders on December 24, 2021, 10:21:01 AMNeat
Quote from: Endicott on December 24, 2021, 10:48:19 AMThis is about the same as the radius of a Culture Orbital, scale fans.
Quote from: bgmnts on December 24, 2021, 11:06:21 AMJust as non scientist not really familiar with space and stuff, will anything we learn from all this work help solve any of the problems on our planet?
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