lajoswinkler

Turn it off (for the ship; the rest of us need gravity for air pressure LOL), you get very high with ease. If you want to turn it off and stay there, you have to accelerate to first cosmic speed. So, turn off, get up there, accelerate, turn back on. However, what does it mean "to turn it off"?Turn it off for the ship in relation to Earth? What about the Sun? I assume you don't want Earth to escape beneath you. This is more complicated than it seems.

It's very difficult to work with and it's extremely dense. Welding out in the open is nearly impossible, it has to be done either in vacuum or with very high electrical beam currents under helium. There is really no need for it. It can be done with steel.

Barry Humphries, comedian best known for his character dame Edna Everage, born in 1934, dies aged 89. https://edition.cnn.com/2023/04/22/celebrities/barry-humphries-dame-edna-dies-intl/index.html

The sentiment of the media is "haha, Musk couldn't make it go even with all that money, it went kaboom, serves him well". It's demeaning. There is much more to Starship than just "big rocket go to space". Like with Apollo, it's a thing all humans can share together. Mocking it is pathetic. Just to be clear, I don't like Musk, but I love SpaceX.

I'm very disappointed by the lying, sensationalist news outlets that filled the world with titles saying that Starship exploded. It did not "explode". It survived all that tumbling, went off course and then flight termination system broke the vehicle apart. If it weren't for FTS, Starship would probably fall as one piece into ocean. I mean, even Scott Manley uses this misleading, spiteful expression. What the hell? Also, Musk seems to be adamant on not using flame trenches and that's just idiotic.

Not even close. Flight termination system disassembled the rocket and it spread in the air. It was a deflagration, not a detonation.

It was pretty ridiculous to do it without water in the first place. Flat concrete... what did the team think would happen? Pressure waves wrecked few engines at the very start.

Now this person owns a car damaged by Starship and I would bet it's worth a lot more than the car before the launch. Think about it...

Well, that was fun.

It depends on what you want to image and how well you want to do it. There are three general teams of astrophotographers: very wide angle (sky, Milky way, visually large nebulas, comets) - it can be cheap, but ideas and targets are quickly exhausted Solar system photography (Sun, Moon, planets and their satellites) - moderately expensive to very expensive, targets are always changing in appearance and ideas are basically inexhaustible, can be done in light polluted sky deep space objects (nebulas, galaxies) - very expensive to extremely expensive, requires dark sky and personal transportation Considering owning equipment, if you are in team SSO, you can do very little for team DSO. If on team DSO, you can do a bit more than that for SSO but not a lot. If on team wide angle, you can't do anything detailed for other teams and other teams can't do wide angle stuff. If you cherish our money, patience and nerves, do NOT make your own mounts and mirrors. It's not worth the effort with prices of new or used equipment today. Also, do not buy crappy 50 mm refractors from malls unless you are perfectly aware you're getting a very bad device usable for fun only. Pick a team and then we can discuss further steps.

Software translators won't have enough ability to translate these things for at least a decade (I'm counting attempts at artificial intelligence here). "Na" means "on" and can be used as a prefix, just like in English, for example "onslaught". "Ser-" is a suffix that comes from "srati" ("to defecate", vulgar form). So yeah. Plenty of fun in my language. LOL

Naser sounds quite bad in Croatian and several other languages. It would be a bad marketing choice. LOL

Yesterday's active region 3272 imaged in ultraviolet radiation which allows us to see plages (large collections of faculas) scattered among small sunspots and photospheric pores. It's a GIF showing the shimmering of our spring air. Very bad for imaging which requires still air, so here's a real-time animation instead. All done with my 150 mm mirror, UV pass filter and monochrome camera. @VanamondePlease consider merging this thread with this, older one of the same topic.

Just a heads-u, for most of its life under our observation, Uranus did not have visibly distinct features, but recently its pole went brighter. It's not like in images released by Hubble and falsely advertised as normal images made in light, where it's bright white, but subdued, brighter blue than its normal sky blue color. More JWST pictures here. https://www.nasa.gov/feature/goddard/2023/nasa-s-webb-scores-another-ringed-world-with-new-image-of-uranus

This made me chuckle.

Sun painted yellow. Space being a cosy canvas of colorful and bright nebulas. Gold-embossed "epic fonts" in certain kinds of games.

In broad terms, state of being wet means containing adhering liquid. Not "molecules of a substance that is liquid at standard conditions", but actual liquid material, otherwise wet would be synonymous with moist and it isn't. It doesn't have to be water, either. Mercury will wet gold, but it won't wet glass.

Luckily, homeschooling is illegal where I live or else many people would use it to turn their kids to ignorant spewers of cult propaganda, just like it happens a lot in places where it's allowed. Children's education should be left to professionals. Besides, going to school is not just about learning facts. There are many social functions it offers.

I hate it like poison. It is and it promotes literally what its name says - a discord. A disorganized mess that attracts and promotes angry yelling in the void filled with other angry yellers. And the idea that people spend money on those "nitro boost" things... unbelieveable. It just shows you can put a turd in a can and someone will buy it. (BTW, I love your nickname. It brings back fond memories.)

Oh, I've heard enough.

It's not a theory, but a hypothesis and it's disproven, nowdays circling pseudoscientific and contrarian areas of Internet obsessed with Russia. Crude oil has molecules that have biochemical origin, such as those from decomposition of chlorophyl, a telltale sign of photosynthetic metabolism. Methane and other lowest hydrocarbons could be partially abiogenic in origin, but crude oil is no doubt biogenic. As for the coal, I said some form of coal. If polyethene and polyvinyl-chloride get exposed to high temperatures in absence of oxidizers, carbon forms. Conditions would have to be more extreme since reactivity is lower, but it would have to be the end product.

Crude oil comes from marine plankton and coal comes from plants on land (bogs and whatnot). Considering how carbon-dense plastic polymers are, I can see how it could turn to some form of coal with hydrogen permeating pores, all perhaps enveloped in thick crusts of chlorides (from PVC). It's an interesting thought experiment that makes me squeamish because it reminds me of how ephemeral we are. PLASTIC!

https://www.nbcnews.com/news/world/terrifying-plastic-rocks-found-remote-brazilian-island-rcna75217 Allegedly, this has been discovered in 2006, but I clearly remember seeing such rocks on shores of Adriatic in middle of 1990s and I'm pretty sure they have been around for quite some time. It doesn't take a long time to form in conditions of hard water and broken karst. All in all, it is a sad lithospheric reminder of anthropocene.

Oh yeah, that's a really good forum to brag being a member of...