believe it or not:the 1K yr old seed grows

by **Lemon Cheesecake** » Sun Jul 23, 2023 10:34 pm

Space debris are like falling stars in the sky ... but I don't understand we can't do better at having them burn up completely in re-entry or why we leave it as debris on the moon or mars.

We are like tourist who don't clean up after themselves & leave a mess behind. Humans seem to pollute wherever they go.

by **npixelz** » Mon Jul 24, 2023 2:25 am

Well

If they burned on re-entry, wouldn't they burn on exit as well? Like, if they made them able to burn when entering, wouldn't they also burn on the trip INTO space?

by **galled** » Mon Jul 24, 2023 11:18 am

It's all about speed and friction. The thicker/denser the atmosphere, the more friction (burning). The slowest part of egress from earth is in the densest part. Friction increases at the rate of the square of the speed, so as rockets leave the earth and speeds up the atmosphere thins. The opposite happens coming back in (an object actually slows down a bit when it hits the denser section of the atmosphere--think "sound barrier"), but going very fast in a thick medium will cause friction--too much friction and things get very hot.

Leaving stuff around is a matter of physics/energy conservation--you can't get something for nothing. The amount of energy it takes to move something let alone return it must be brought along with you. We just don't have the energy density technology yet to clean up after ourselves. Sure, SpaceX is making launching more efficient, but we need Star Trek gobs of power to be able to clean up after ourselves/pack out our trash. We're so dull edge primitive (as opposed to bleeding edge) at this point, we're lucky we can get anywhere at all off planet. I think we'll get there eventually...

by **npixelz** » Tue Jul 25, 2023 2:06 am

I see!

by **Lemon Cheesecake** » Tue Jul 25, 2023 7:30 pm

oh yes, need to develop replicators like on Star Trek.

by **npixelz** » Wed Jul 26, 2023 2:27 am

Are you saying...
We need to...
Replicate that technology?

by **galled** » Wed Jul 26, 2023 2:27 pm

Beam me up!

by **npixelz** » Thu Jul 27, 2023 2:17 am

Are you...
Beaming while reading my joke?

by **galled** » Thu Jul 27, 2023 12:25 pm

Warp 13!

by **npixelz** » Fri Jul 28, 2023 2:05 am

I hope my humor isn't warped to you

by **Lemon Cheesecake** » Tue Aug 01, 2023 7:02 pm

That joke was beamed to you at warp speed. WARNING: don't try to replicate !

by **npixelz** » Wed Aug 02, 2023 2:44 am

Beating me at my own game smh

by **Lemon Cheesecake** » Wed Aug 02, 2023 8:28 pm

Hurray! I actually did it!

by **npixelz** » Thu Aug 03, 2023 2:10 am

Tsk tsk

Lol

by **Lemon Cheesecake** » Thu Aug 03, 2023 10:38 pm

I shall mark my calendar for the meteor shower 8/12 & hopefully I can actually see some! Last tiem was a dud.

But now I know to look East of the North star.

believe it or not:the 1K yr old seed grows

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