The Astronomy Thread

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meStevo

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Boeing Starliner fails to reach ISS, an error with time tracking on their crew capsule resulted in thrusters not firing when they should have to put it in the proper orbit.

If it was crewed, astronauts may have been able to take control and attempt to correct the error.

Capsule wasn't lost or anything, just in the wrong orbit and they'll now bring it back down instead of it going to ISS.

 
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Mudcrush Durtfeet

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Boeing fucks it up again.


"Bridenstine also speculated that were NASA astronauts actually on board, they would “absolutely” have “been safe,” and that they probably could’ve assisted and overcome the automation error encountered via manual control to save the mission."

'Probably'...

In a different article, it was reported that a NASA administrator said 'a lot of things went right'.


Can NASA kiss Boeing's ass any harder?

Any bets on whether NASA will declare it 'essentially' a success?
 
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Ukerric

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Boeing Starliner fails to reach ISS, an error with time tracking on their crew capsule resulted in thrusters not firing when they should have to put it in the proper orbit.
Boeing... software... sounds legit.
In a different article, it was reported that a NASA administrator said 'a lot of things went right'.
I liked the articles just before the launch, where Bridenstine was quoted saying "This is NASA's Christmas gift to America!"
Any bets on whether NASA will declare it 'essentially' a success?
And no need of another test, of course.
 
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meStevo

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Lots of eager speculation about what this means.


Since October Betelgeuse has faded from one of the 10 brightest stars in the sky to just inside the top 20.

Most agree that it's probably not a big deal, as Betelgeuse is a variable, and has established cycles. As the article mentioned, 2 of it's cycles may have overlapped at their lowest points causing this particularly noticeable dimming event. There are other symptoms we'd likely see if this was a precursor to a super nova, but as this article concludes... if this drags on for a longer than explainable period then 'all bets are off'.

Because I'm a dork and thought this cloud looked like a star destroyer, here's a shot of Orion the other night :p

1577413070571.png
 
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Ukerric

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That Betelgeuse shit is terrifying.
Why? At 600 LY, a supernova isn't dangerous. The estimated range at which a supernova could trigger a mass extinction is estimated between 100 and 50 LY. At 150 LY, you'd get the equivalent of a couple CT-scans per year, which might get an uptick in cancer rates. At 600LY, it's totally negligible (remember: effects diminish at an inverse square from distance).
 
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Hekotat

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Why? At 600 LY, a supernova isn't dangerous. The estimated range at which a supernova could trigger a mass extinction is estimated between 100 and 50 LY. At 150 LY, you'd get the equivalent of a couple CT-scans per year, which might get an uptick in cancer rates. At 600LY, it's totally negligible (remember: effects diminish at an inverse square from distance).

Maybe I'm thinking of a different star then. I thought that was the one that was close enough to fuck our shit up.
 

Lambourne

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The one that's been in the media is WR104, because it's also likely to go supernova "soon". Although much further away than Betelgeuse, it could trigger a gamma ray burst and its axis of rotation (along which the burst would eminate) is pointed in our direction.

I read Phil Plait's "Death from the Skies" a few years ago, it's a fun read all about the dangers the cosmos could send our way. Also has a pretty good explanation about how supernovas work, I liked that's a bit more in depth than the average popular science doc, but still simple enough to understand without a degree in physics.

TL;DR is that it's all extremely unlikely and mostly impossible to defend against, so you're better off worrying about the things on Earth that you can affect.
 
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Kiroy

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Not sure about the statistics but id think we should be more worried about a grb over a nova, if were gonna worry about something like that.

Id guess a meteor/astroid mass extinction would be more likely by a large factor
 
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Ukerric

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Not sure about the statistics but id think we should be more worried about a grb over a nova, if were gonna worry about something like that.

Id guess a meteor/astroid mass extinction would be more likely by a large factor
Well, we've already had one, so it is more likely.
 

Kirun

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The real mindfuck about Betelguese is that it may have already gone supernova and we just haven't "seen" it yet.
 
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