
p.s. All Hubble pics are 'colour tinted' in 'photoshop'. I would imagine there are a few other additions also.
Oh how they must have LOLed when they released this pic of the Cosmos giving us the finger as pictured through the lens of the magic Hubble telescope which is protected in outer space by Meteorite repellant spray.
p.s. All Hubble pics are 'colour tinted' in 'photoshop'. I would imagine there are a few other additions also.
It doesn't need rockets to stay in orbitAlthough Hubble doesn't "visit" celestial objects — it never leaves its orbit — it does need to point itself to different directions to see different objects. But there are no rockets on Hubble, because rockets would fill the space near the telescope with contaminating jet propellant residue.
While not being an expert in anything, I tried to go into how an orbiting object works. There is no need for propulsion, as long as the initial kick that puts the satellite in motion is calibrated right. We are talking about space void, where there is no air resistance, hence nothing can stop an object in its motion. Unless you want to argue that planets and stars and comets have a propulsion system, or maybe they slow down over time.hoi.polloi wrote:If it sits still, wouldn't gravity demand that it plummet to Earth? Or does it also have its own propulsion to fight against gravity for dozens of hours?So we have to believe it can move around the sky and also stop absolutely still for days at a time. How does it do this I ask myself
Oh, yeah, it is so crazy. Sure, we do the same exact thing from our observatories on earth, while the earth travels at a high speed into the cosmos, spinning on itself. I wonder how is it possible that we can observe the sky from the earth? It probably means the earth is fixed in place, doesn't it. Probably Hercules is keeping it into his hands, balancing himself on a turtle.AlexJones wrote:Now for the confusing partit mentions it being in orbit around earth, but you would imagine looking at stars whilst moving is going to not work out to well you'd think. It seems they make the whole thing seem like child's play, but moving around a planet whilst imaging a fixed point of light sound crazy.
I know how telescopes work on earth, they have very large motors to track stars, but the Hubble telescope is orbiting the earth every 97 minutes, thats the difference.nonhocapito wrote:Oh, yeah, it is so crazy. Sure, we do the same exact thing from our observatories on earth, while the earth travels at a high speed into the cosmos, spinning on itself. I wonder how is it possible that we can observe the sky from the earth? It probably means the earth is fixed in place, doesn't it. Probably Hercules is keeping it into his hands, balancing himself on a turtle.AlexJones wrote:Now for the confusing partit mentions it being in orbit around earth, but you would imagine looking at stars whilst moving is going to not work out to well you'd think. It seems they make the whole thing seem like child's play, but moving around a planet whilst imaging a fixed point of light sound crazy.
i know what you mean... way way too fast to be ANY plane, yet colour light still blinking & flashing... satellites ?nonhocapito wrote: ...the fact that on a starry night just by looking up to the sky we all can see points of light moving about the sky. Those aren't airplanes and I doubt them being UFOs or angels. I tend to believe those are satellites.
So? as long as you always know where it is , and where it is pointed at, all you have to do is to decide when it will snap a picture. Big deal. Have you ever noticed how very distant objects, even when you are traveling very fast, don't seem to move? That's how we can snap steady pictures from train and airplanes. I imagine that Hubble can snap a picture of a distant galaxy, even if it takes a few minutes of exposure, considering that the galaxy is millions of light years away.AlexJones wrote:I know how telescopes work on earth, they have very large motors to track stars, but the Hubble telescope is orbiting the earth every 97 minutes, thats the difference.
No the ones I mean are not blinking and flashing. They entirely look like stars or planets to the naked eye, except they move across the sky and disappear in a matter of minutes. They are not meteorites, their motion and brightness are entirely steady.They're the easier thing to spot. These nights I usually go in my vegetable garden looking for snails (the fuckers are eating my zucchini). So I did yesterday night and like clockwork, I looked up, and saw the light going about in the sky. Nothing fancy, I've seem them since I was a kid. They're the damn satellites.reel.deal wrote:i know what you mean... way way too fast to be ANY plane, yet colour light still blinking & flashing... satellites ?
shooting stars ? ...meteorites ?!?
Ok. But NASA told us that the pliers lost by one of their astronaughts (the guy repairing the solar panels) were expected to eventually "fall down to Earth - but we will me monitoring them by radar" (yes, I'm quoting the NASA experts). Now, weren't those pliers also orbiting in space without air resistance? Does the ISS have any propulsive means to keep it where it is (between 278 and 460km altitude / source: wikipedia) for year after year? No. Do those pliers have that? No. Yet, their weight/gravity-pull is only a tiny fraction of the Space Station's. I trust you get my drift.As to the fact that such object keeps moving without constant propulsion, I guess this is explained with the orbiting object flying in space without air resistance, so that nothing slows it down.
We already know that Hubble has no thrusters. Shouldn't we learn more about the thrusters which all other satellites must be equipped with? And how these thrusters operate (supplying directional propulsion) in the vacuum of space?A perfect stable geostationary orbit is an ideal that can only be approximated. In practice the satellite drifts out of this orbit (because of perturbations such as the solar wind, radiation pressure, variations in the Earth's gravitational field, and the gravitational effect of the Moon and Sun), and thrusters are used to maintain the orbit in a process known as station-keeping. http://en.wikipedia.org/wiki/Geosynchronous_orbit