- first powered flight on a heavier than air craft. The first humans flew in 1783 on a hot air balloon.
Deme
joined 1 year ago
Itse en sopulin omiin yhteisöihin paljoa postaile, mutta ihan aktiivisesti selailen ja kommentoin näin muuten.
Jos feedi on kuollut, kannattaa tilata lisää yhteisöjä, vaikka sitten muilta palvelimilta. Kyllä niitä löytyy elinvoimaisiakin.
How's he being an ally here? He's just talking about some people who supposedly pulled themselves up by the bootstraps. Most likely in an attempt to prove that others in similar situations have only themselves to blame for not doing the same.
Yes, but was this the bullet that hit him (so picture taken after he was hit), or a previous shot that missed?
mementomori.social on ainakin yksi. Oman kokemuksen mukaan varsin eloisa ja vakaalla pohjalla. Muista ei ole omakohtaista kokemusta, mutta onhan noita.
Spectacular crepuscular rays!
Ok sure, but hindus still don't let that bother them.
I know you're being sarcastic, but I just absolutely despise that mentality. People seriously think that it's best to just roll over to the side and surrender every symbol the nazis want for themselves?
"Be the change you want to see in the world."
I did write "mostly" for a reason. Aluminium is used a lot in aerospace due to its low mass. There is a lot of matter falling from space naturally, but the composition is key to the effects that will have on the atmosphere. Satellites, spent stages etc. have different compositions to meteors.
Over 20 elements from reentry were detected and were present in ratios consistent with alloys used in spacecraft. The mass of lithium, aluminum, copper, and lead from the reentry of spacecraft was found to exceed the cosmic dust influx of those metals. About 10% of stratospheric sulfuric acid particles larger than 120 nm in diameter contain aluminum and other elements from spacecraft reentry. Planned increases in the number of low earth orbit satellites within the next few decades could cause up to half of stratospheric sulfuric acid particles to contain metals from reentry.
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.html
When old satellites fall into Earth's atmosphere and burn up, they leave behind tiny particles of aluminum oxide, which eat away at Earth's protective ozone layer. A new study finds that these oxides have increased 8-fold between 2016 and 2022 and will continue to accumulate as the number of low-Earth-orbit satellites skyrockets.
Those micrometeors aren't mostly aluminium.