what are the man made creations visible from space?
546603
It has become a space-based myth. The Great Wall of China, frequently billed as the only man-made object visible from space, generally isn't, at least to the unaided eye in low Earth orbit. It certainly isn't visible from the Moon. \nYou can, though, see a lot of other results of human activity.\n \nThe visible wall theory was shaken after China's own astronaut, Yang Liwei, said he couldn’t see the historic structure. There was even talk about rewriting textbooks that espouse the theory, a formidable task in the Earth’s most populous nation.
86019
whether ballons, electrical diffuses in sky due to sun flares if you live near the poles. Some times we believe and see things which are actually not there. satellites can also be mistaken for UFO's
277479
Do you mean satellites people made that are still up there? Because I think there is an answer to that question.\n\nBut natural satellites? Gazillions.
596093
Yes I have seen them all of my life...Just to name a few that I have been witness to ..A huge rectangle object that could take an entire football field to land. A silver disc right above me in the middle of the afternoon as I sit on the lake in my boat fishing..then it shot up and gone with instant speed..speed we do NOT have...an orange sphere...silver balls....a backwards c shape object we followed for 45 min...an elongated diamond that shone an intense spotlight on me before it shot up into the night ...then the very most recent was last month.\nIt was a windy night and not really that nice out, no rain just not nice. I decided to go to grab a bag of blankets from the RV that's parked down by the lake. I headed out from the cabin and was half way there when I looked at my watch and it was 12:01 am Sunday May 7th. I then went inside to grab my bag of blankets. I was in there for maybe 15  seconds and I then stepped outside and was facing west and there, right in front of me was a elongated diamond light sitting in the western sky. It was the size of the moon. If you imagine the moon being shaped to that description of an elongated diamond it was similar to the one I had witnessed last August here, but there was a dark circle in the middle of it. I stopped in my tracks as it took my breath away.\n\nIt was very clear, very visible and so very out of place. it was approx. 1/4 mile away and 300 - 400 meters up. I stared at it for about 4 or 5 seconds, suddenly there was a bright flash that lasted about 3 seconds. I quickly thought maybe it's a meteor or something burning up in the atmosphere, due to the intensity of the light, but I realized as it went back to it's original intensity, again that was not the case. As I already knew deep inside me and the fact the object wasn't moving. It sat there for another few seconds then it started upwards and towards the west and in an instant it was as small as a tiny star. I then followed it as it turned south for a second and shot up straight into space. Yes they are real..I have seen them all of my life
127216
All kinds of materials. But the important thing to note is, that NASA did not make the Hubble Space Telescope, by and large. This work was done by contractors.
578168
http://www.johnstonsarchive.net/spaceart/cylmaps.html
609476
gamma rays\nvisible light\ninfrared light\nmicrowaves
928062
Well you can use spectroscopy to find out the composition of distant objects in space.  IE if a star emits light near (usually a slight red shift from distant objects) the emission lines of helium or mercury you could conclude that those elements are present.\n\nMike
780823
Could be a strange mirage. Sometimes weird mirage can project skyline of cities beyond horizon or just strange shapes in sky when atmosphere refract lights in unusual ways.
1044689
There are stars in some, but not all of the photos.\nStrong lighting causes the stars to get underexposed, and that is why you can't see them.\n\nIf you have any reason to doubt our landing on the moon ask the Russians (Who had their own lunar program) if they believe it.  They had many spies, and would have benefited greatly if the moon landing was in fact a hoax.
326416
some ideas of what you could make the model from:\n\nstyrofoam\nclay with rocks\nlegos\npaper mache (shape your wall then take strips of newspapers dipped in glue and water mix and cover it..you can paint it when it dries)\nyou could use small boxes or cut up cereal boxes..and then paint them. \n\nor you could get really wacky and make it out of those little take out containers...or noodles..and shellac them. use your imagination!\n\nyou could even make a really tiny model and then build a model of a rocket that is larger..to show that it can be seen from space!
727284
Nothing.  You can see no man-made structures from the Moon.  You can't see the great wall of china; it's a myth.
1088527
Statistically it is very likely there is. There are many many billions of galaxies with billions of planets.\nThere are also some organisms found on meteors, but that’s not sure those came from the outer space.
32451
Actually, despite what has already been said...you can. However, define "see". It is very difficult, if not impossible to see with the naked eye, but can easily been seen using hi res cameras on satellites.\n\nSee here from the European Space Agency:\n\nhttp://www.esa.int/SPECIALS/Proba_web_site/SEMTTHGHZTD_2.html
550978
I've been out observing the sky many times as an amateur astronomer togehter with a lot of other ppl. We see many things in the sky, but none of them is hard to explain, especially not when you can look at them with good binoculars or telescopes.\n\nI classify ufo's to the other mass of "sightings" constructed by man or brain spawns... ie Yetis, Loch ness monsters, God, Leprechauns, Witches, Trolls, Unicorns, Dragons etc. Some of these things are perhaps funny to bring up today, but ppl have believed in them at one time or another.\n\nSo - in short - man is not a trustworthy witness. Eyes and brains are not the proof you need to establish an existance.
986050
I think you were watching a sci-fi show, maybe artist's conceptions of planets in other systems. We can confirm that the other planets exist by watching for gravitational anomolies but our tech isn't up to the task.
650511
None, they up in the Sky, best seen at night. The Earth does revolve around a Big Star that can actually be seen in the day and not night. Make for a good Word Play/Riddle question. ;-D