Shpaget

Oh, I know it's flawed. I even wrote it in my post, but in one of the multiple checks and edits I made before posting, I suppose that part got lost. I guess I should have made another check. What I meant to ask was, if the mirror was not flawed, and if it was installed on a new platform, equiped with newer generation electronics, would it make sense? After all, the mirror of that size and precission is pretty expensive.

I'm having trouble finding the cost of HST primary mirror. Would bringing down the HST in order to reuse the mirror make economic sense? If the Space Shuttle was operational, what would be cheaper? A retrieval mission or a new mirror? Sure, with modern adaptive optics and honeycomb mirrors, you don't need so large single ones, multiple small ones would probably be cheaper, but still....

I got myself the Scandinavia DLC for ETS2. At $20 it was a bit too much for my wallet, but with 70% off, I can't say no to it.

As a general rule, you should not delete posts. Some day someone might google his way to this page trying to figure out the same issue you had. If/when that happens, he can have his answer. Another rule is that if you ask for help and later figure out the solution for yourself, you should post the solution as well, for the same reason as above. You have done that second part, so a slice of good karma goes to you.

It looks like the engineers followed that old design practice of "Moar boosters!!". Good luck!

A jet engine can not compete with a rocket engine regarding TWR, compound that with the issues jets have at high Mach, you quickly realize that jets to space are not going to happen.

That would be a very interesting Championship to watch! Crowd cheering, waving flags and banners in unison, supporting the single player alone on the entire field. The ref blows the whistle to start the match, then moments later again to end it because no one showed up to oppose our superhero. The sponsors would be waiting in lines for the opportunity to throw their money at the event.

Well, Harrier has TWR > 1, because VTOL, which brings up an entire list of VTOL capable aircraft: https://en.wikipedia.org/wiki/List_of_VTOL_aircraft Also, every helicopter that has ever flown. As for airliners, their TWR ranges from around 0,25 to roughly 0,30.

Stuart Ashen has an entire youtube series of "eating" expired food. For example: Most of the stuff I wouldn't touch with a pole on a stick.

Anyway, did you know that next New Year falls on friday 13th?

No, wrong. A truly random sequence, if long enough is bound to have repetition. While I can't claim random.org to be truly random, it's as close as I can get. This is the sequence generated by it: http://pastebin.com/RdcsdcXf A very rudimentary analysis shows that there are many instances of the same number being repeated twice in row, quite a few times we see 3 in a row, but there are also 4 3s in a row, 4 8s in a row and even 5 9s in a row. All this in a relatively short sequence of only 1000 digits.

Granted, photons traveling infinitely have not been observed, but we have observed photons traveling from the edge of the visible universe. If that's not far enough for you, I don't know what is. While we can't make any definitive statement about the unobservable universe, I see no reason why it would behave drastically different than quite a big chunk of the universe we can observe and call observable. This observable universe behaves quite uniformly regarding the expansion, so suggesting that the unobservable part is fundamentally different than observable makes no sense. Dark matter and energy are not exactly guesswork. They are a model intended to help explain the observable facts. Just like when I wake up in the morning and see that the street in front of my house is wet, I can very well assume it rained during the night, even though I have no evidence that it actually rained. The reason the road is wet could be something completely different, but until I find the evidence, I may as well assume it rained.

The concept is nothing new. All the important aspects shown are already in use. Have been for decades. The shiny stuff that doesn't exist holograms, voice commands, AI etc are irrelevant. As for the end part where the guy fixes the ship...

I would assume that non heating of the food is the result of that food being transparent to microwave radiation, not opaque. A shield needs to be opaque, meaning it stops all (or most of) the radiation. If it stops radiation, it needs to absorb the energy in that radiation, and that means heat. Or is it reflective? in that case, the radiation would just bounce around in the oven until it hits something that can absorb the microwaves.

Basically, a compression algorithm looks for repetition and patterns. Then it stores a copy of a word, phrase, sentence, paragraph... that is repeated multiple times and replaces that entire sequence with just a small marker indicating where this section goes. The marker uses less space than entire sentence. Example: I like gummy bears. My favorite gummy bears are Haribo. Some gummy bears are not so good so I don't like them. A compressed file would look something like this: I 1 2. My favorite 2 3 Haribo. Some 2 3 not so good so I don't 1 them. Then you have a list of replaced sections, something like: 1 like 2 gummy bears 3 like If the text is long, the savings can be quite high. Image compression is a bit more complex, but still works on same principle - repeating patterns. In lossy compression, neighboring, slightly different pixels can be compressed as identical. This way some data is lost and the original image can not be reproduced from the compressed one. Then there is lossless compression...

The hard black stuff is called epoxy potting compound. http://www.masterbond.com/applications/potting-and-encapsulation http://solutions.3m.com/wps/portal/3M/en_US/Adhesives/Tapes/Products/~/3M-Scotch-Weld-Epoxy-Potting-Compound-DP270-Clear-200-mL-12-per-case?N=6081606+4294871708&rt=rud The transparent soft coating that can be seen on some PCBs and covers all the components is called conformal coating. http://www.humiseal.com/conformal-coating/ http://www.dowcorning.com/content/electronics/electronicsproducts/conformal-coatings-overview.aspx However, for your application, neither sounds as a good choice. The first one is rigid and will just move the place where the wires will break, and the second one is usually sprayed on PCBs so I don't think you'd be able to apply it to free wires. What I would use in your place is something like Sugru or self-vulcanizing electrical tape.

What do you mean by that? It either falls in upon itself, or expands outwards. Current observations suggest it not only expands outwards, but also accelerates outwards. That goes against the logic in case there is nothing but regular matter, since even if the expansion was occurring at or above escape velocity, it should still be decelerating. Since that is clearly not the case, there logically has to be a mechanism that overrides and overpowers this expected behavior.

Suborbital? Sure. Ever time you throw a rock it's suborbital. For something mode substantial, recently Blue Origin launched (for the fourth time) its New Shepard single stage suborbital rocket. As for an actual winged aircraft, MIG 29 can reach high enough for the sky to turn black (~20 km).

They (probably) use porkchop plots. Then they decide the optimal time to launch, taking into account that while longer transfers requiring lower dv, require more supplies, larger habitation modules, increase radiation exposure and the shielding necessary. Those things, while not increasing dv, do increase spacecraft mass which means bigger rocket.

Because W=F*d work = force * distance over which that force is applied. If the spacecraft is traveling fast it covers more distance in the same period than if it traveled slowly.

Well, life likely needs a metal rich environment. Our Sun is a third generation star, rich in heavy elements and is only 4,5 b years old. Other life bearing planets should need about the same time to form. Perhaps stellar life cycles are shorter near the galactic core, but it still takes a few billion years for a hydrogen cloud to produce heavy elements.

It's still five orders of magnitude short of one rotation of Sun around the galaxy.

What?

They are obviously talking nonsense. They speak of the broadcasts as if they were the primary means of communications with the aliens. Our TV and radio broadcasts are not emitting into space - that would make no sense. They are emitting towards the ground - that's where all the receivers are. The minuscule amount that seeps up can not reach 80 ly, let alone, 1500 ly and still be usable.

Yeah, it would be a great idea if we were capable of foresight. How many times do we need to repeat the history? We've already both unintentionally and intentionally introduced invasive species that it's not even funny. We even have genetically modified species running amok bringing imbalance to the wild. The only word that comes to my mind to describe someone considering using this technology is arrogance.