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  #1  
Old 10-20-2020, 04:13 PM
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Lkristians Lkristians is offline
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Default Amazing Meteor Landing

Incredible. NASA just landed on the meteor. We should be getting some kind of photos soon!

Touchdown and back up! Samples taken.
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Old 10-21-2020, 04:55 AM
815C 815C is offline
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Just think of the math involved in the trajectory of that space craft!
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Old 10-21-2020, 07:03 AM
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Is Bruce Willis and his crew drilling yet?!?
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Old 10-21-2020, 07:16 AM
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I saw that too. Landing on asteroids and meteors must be fun!
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Old 10-21-2020, 07:31 AM
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Has anyone seen what they estimate the gravity on that little bugger to be? 0.001G?
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Old 10-21-2020, 08:08 AM
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Originally Posted by M19 View Post
Has anyone seen what they estimate the gravity on that little bugger to be? 0.001G?
I'm guessing that means that if you jump around playing guitar on stage you may not land back on the stage
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Old 10-21-2020, 08:42 AM
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That little-asteroid-that-could has a name, and it's Bennu!



https://www.nasa.gov/feature/goddard/2020/bennu-top-ten

It says on that page that if Bennu misses us this time it has another chance next century. Love that keep trying spirit!

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Originally Posted by M19 View Post
Has anyone seen what they estimate the gravity on that little bugger to be? 0.001G?
Just enough to keep it together. Wikipedia tells us its equatorial surface gravity is 6 micro-g. Which doesn't mean a lot to me. From my 45 second search it would appear that 10 micro-g is roughly the gravity of Earth from 6,000,000 kilometres away. So the rule is no jumping, kids. Ok?

It all kind of makes me think that nature doesn't really abhor a vacuum. I've been thinking about that a lot lately, should probably fill that void and turn it into a song.
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Old 10-21-2020, 09:18 AM
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Quote:
Originally Posted by Lkristians View Post
Incredible. NASA just landed on the meteor. We should be getting some kind of photos soon!

Touchdown and back up! Samples taken.
Asteroid - just a little clarification: Anything floating up there and not captured by the Earth's gravity is an asteroid or comet. Only if/when it enters the atmosphere does it become a meteoroid - known as a meteor if (as it does normally) it burns up during descent and as a meteorite in the rare instance a portion survives to impact.

Class over - Carry on!
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Old 10-21-2020, 10:40 AM
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Default yup

Bennu is now claimed by the United States
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Old 10-21-2020, 12:11 PM
robj144 robj144 is offline
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Quote:
Originally Posted by KevWind View Post
I'm guessing that means that if you jump around playing guitar on stage you may not land back on the stage
Just did a quick calculation for the escape velocity on the asteroid. If you can jump to a height of 0.89 mm or 0.04 inches on Earth, you'll jump off the asteroid into space never to return to the asteroid. Pretty sure some insects could do that.
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Old 10-21-2020, 01:11 PM
Dru Edwards Dru Edwards is offline
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Bennu is now claimed by the United States
lol.

So cool. Wasn't there another comet/asteroid landing a couple of years ago? Perhaps by another country?
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Old 10-21-2020, 04:45 PM
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lol.

So cool. Wasn't there another comet/asteroid landing a couple of years ago? Perhaps by another country?
China?...............
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  #13  
Old 10-21-2020, 04:58 PM
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China?...............
Japan.....
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  #14  
Old 10-22-2020, 04:25 AM
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6 micro G? That's .000006 G! Don't use the diving board at the Hotel swimming pool!
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Old 10-22-2020, 09:09 AM
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Good show about this last night on PBS NOVA
https://www.pbs.org/wgbh/nova/articl...oid-touchdown/
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