Heaven before me (on me). A cluster of points that seem to glow to the rhythm of the crickets sing
. I confess that I took time to convince me that the flickering of the star was unrelated to the sound of crickets. Come, but come and go at the pace of the cri-cri!
The stars do not blink due to the chirping of crickets, but because the air in our atmosphere. That is, the stars do not change their intrinsic brightness (at least not so much in so little time) but when the light hits the Earth's atmosphere deflects it differently depending on the amount of air that exists between the star and us . As the atmosphere not quiet, but there
winds move air from one place to another, we see the stars always the same, but that flicker. Well, as you see them as we dive into the sea! The stars would not stop dancing as the waves do come and go.
This is because the stars are scattered. In the case of planets, as
Jupiter, Saturn, Mars, etc.., To be closer to us than the stars, we see them larger. No longer mere dots in the sky but circular splotches. Thus, although some of the rays of light from the planet's surface deviates even light keeps coming somewhere else in the world and we always watching. Do not blink.
Planets, to be extended objects no flash in
as obvious as the stars, looking time.
Then it is easy to recognize the planets. Fat are those points in the sky
not blink much. Well, plus the planets also are easily recognized if we are watching night after night. Metro means shooting star in Greek just because night after night to watch are points that move in relation to other stars. Oysters! Can you have someone much memory to remember how they were the stars yesterday and know that one of those spots has been moved? Wow! Go astronomers have coconut, man!
rule, if an astronomer think that has much coconut is a tricky thing. The trick this time is called Constellation . A constellation is a small group of stars that astronomers (more or less imaginative) reminds us of something. The problem is that the Greek astronomers that encargardor to put names to the constellations have a strange imagination. Look at the next constellation.
Cassiopeia, girl, eat a little bit to see if you're too skinny!
I see only one W or M , but the ancient Greeks saw a woman named Cassiopeia. It turns out that the thought that Cassiopeia was beautiful, much more than the daughters of Poseidon and being so vain, he sent a sea monster to kill his daughter Andromeda. Wow. an entire soap opera that had mounted the Greeks with their gods!
I guess now would catch our favorite TV characters to represent the stars. It would be nice to have a constellation Constellation Homer, right? Although not surprise me that some astronomers would like to draw the constellation of the gorilla, or something.
Connect the dots ... The constellation Homer!
Anyway, to remember where things are, astronomers do
drawings in the sky as if we were children and we can find what they seek more easily. Therefore, do not be fooled: The constellations we have invented the men. There is nothing that binds physically a star with the other. Not even close to each other. When say, for example, that the Sun is in the constellation of Leo we are simply saying that it has entered into the drawing to us, from our terrestrial and imagination of a Greek idle, we decided to give it the dubious form of a Lion.
is, that the planets move with respect to the drawings of the constellations and so are 'wandering stars'. Although not all wandering stars are planets. Also, asteroids and comets move. Asteroids are specific areas, like a star. Instead comets have a tail or a more or less diffuse.
move When I say that I speak that can be seen from one day to another. Or a week to week. I'm not saying that you're watching and you see that moves. In that case what you're seeing is probably a UFO. Yes, yes, a UFO of alien origin, of course. Nothing ever built by man to fly across the sky. Aliens must be sure ... Or not? Bueeeno, okay. Surely if it moves much a bright spot in the sky is much more likely to be an airplane, helicopter or an artificial satellite that an alien spaceship that comes to leave a supersuit for us to be heroes.
Comets is not the only thing in the sky to look fuzzy. The stars we see are all of our galaxy, the Milky Way. But we also see other galaxies and have the appearance of splotches in the sky. In the southern sky we can even see the Magellanic Clouds, galaxies very close to ours that we like clouds in the sky. There are also nebulae that belong to our own Galaxy. Are star-forming regions, where the gas between the stars is still free.
Okay, I think we're more or less ready to identify what
see in the sky and start enjoying.
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