Why sometimes we can see the star in the sky,but sometimes no?
471007
Because stars are not very bright. In the day time, scattered sunlight makes the sky a bright blue, brighter than the stars. Even bright streetlights are enough to overwhelm the dim starlight.
736872
It's an optical illusion. When it's near the horizon there are points of reference within your field of vision so your brain can correctly assess the size of it whereas high in the sky, there's nothing for the brain to use to assess size.
356082
Well it's impossible to see stars when the sun is up, and Venus is the only planet visible during the day, so there is no way all those bodies could have been visible at the same time. There might have been some sort of alignment, but it would only have been calculated, not observed.
569603
u can only see white when u look at the stars because u are seeing the combination of all the visible radiation. U can clearly make the colors through a telescope with a spectroscope attached. That is how they can tell the chemical composition of stars. However there are a few stars in the sky whose colors are plainly visible. (Betelgeuse in Orion the hunter.) but this has to do with the stars temperature. red for cool stars and blue for very hot stars.
1048072
There's a relative way to interpret your question as well.  \nWhen you look at the stars, you're seeing them because of the light that travels from them to you.  It takes time for the light to reach you.  So, you're not seeing the stars as they are "now".  You're seeing them as they were in the past.  They may not even be there any longer.  They may have gone nova or even supernova (if big enough), but the information of that event traveling at the speed of light hasn't reached us yet.  Just  remember it's all relative.  So, depeneding on which oberserver you ask and how you define certain terms...just how many stars that you can see are really there?
329109
The reason you can see the moon in the sky during the day is because at that time the moon has rotated to where it is inbetween the earth and the sun.  So they are both visable at the same time.  It takes 28 for the moon to circle the earth, this is also the cause of moon phases, such as full moon/ new moon ect.
174795
It is Olbers' Paradox.\n\nWhy isn't the night sky as uniformly bright as the surface of the Sun?  If the Universe has infinitely many stars, then it should be.  After all, if you move the Sun twice as far away from us, we will intercept one quarter as many photons, but the Sun will subtend one quarter of the angular area.  So the areal intensity remains constant.  With infinitely many stars, every angular element of the sky should have a star, and the entire heavens should be as bright as the sun.  We should have the impression that we live in the center of a hollow black body whose temperature is about 6000 degrees Celsius.  This is Olbers' paradox.  It can be traced as far back as Kepler in 1610, and was rediscussed by Halley and Cheseaux in the eighteen century; but it was not popularized as a paradox until Olbers took up the issue in the nineteenth century.
331809
science_FREAK, you think the furthest star is just 82 million km away????!!!  That wouldn't even take us out of our own solar system!  In fact, our star, the Sun, is 150 million km away!\n\nIf you mean why do some stars "appear" brighter than others, then that is because stars are at different distances from the Earth, and they are different sizes.  IF you had 2 identical stars, but one was twice the distance from the Earth that the other, then the further away one would appear much dimmer in the sky.\n\nBut all stars shine with a slightly different brightness, I doubt that any two are identical.  So the appearance of some stars being brighter than others is down to size of stars and how far away from us that they are.
123908
I have no idea why, but looking at a bright light (such as the sun) usually works.
594462
I dunno. Why don't you ask the stars up above?
1013429
You can even see the Moon in the daytime because it is big and brightly lit by the Sun. The surface of the Moon is about as reflective as an asphalt road--rather dark but not totally black. When you look at the Moon, you are seeing the light which reflects off it. This is not nearly as bright as the Sun, but it is up to 100,000 times as bright as the brightest nighttime star. \nDuring the day, the brightness of the sky washes out the light from the stars: a region of the sky including a bright star is only very slightly brighter than a region of the sky without a bright star, so your eye cannot notice the difference. However, the region of the sky containing the Moon is much brighter, so you can see it. You can also sometimes see Venus during the day if the conditions are right and you know exactly where to look, but anything dimmer is lost. \n\nIt might be useful to think of the sun as a large light bulb, and the moon as a large mirror. There are situations where we can't see the light bulb, but we can see the light from the bulb reflected in the mirror. This is the situation when the moon is out at night. We can't see the sun directly because the earth is blocking our view of it, but we can see its light reflected from the moon. However, there are also situations where we can see both the light bulb and the mirror, and this is what is happening when we see the moon during the day. You can explore this for yourself with a light and a hand mirror. Depending on which way you face (away from the light or sideways to the light) you can see either just the mirror, or both the light and the mirror. \n\nI hope this helps!
11418
The scientific name for the twinkling of stars is stellar scintillation (or astronomical scintillation). Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere. \n\nStars (except for the Sun) appear as tiny dots in the sky; as their light travels through the many layers of the Earth's atmosphere, the light of the star is bent (refracted) many times and in random directions (light is bent when it hits a change in density - like a pocket of cold air or hot air). This random refraction results in the star winking out (it looks as though the star moves a bit, and our eye interprets this as twinkling). \n\nStars closer to the horizon appear to twinkle more than stars that are overhead - this is because the light of stars near the horizon has to travel through more air than the light of stars overhead and so is subject to more refraction. Also, planets do not usually twinkle, because they are so close to us; they appear big enough that the twinkling is not noticeable (except when the air is extremely turbulent). \n\nStars would not appear to twinkle if we viewed them from outer space (or from a planet/moon that didn't have an atmosphere).
300540
Observed from Earth’s surface, stars appear to twinkle because the atmosphere bends light on its way to the ground.  Stars are so far away that they appear as points of light in the sky, so when the atmosphere bends light from a star, it actually prevents the light from the star from reaching our eyes entirely—in other words, the tiny beam of light from the star that could reach our eyes at that point in time gets deflected away from our eyes briefly.  Thus, stars appear to twinkle on and off.  At one instant, a star’s light reaches your eye; at the next instant, it doesn’t.\n\nThe sun is simply too large to twinkle.  Yeah, one beam of light may get scattered away (perhaps to enhance the blueness of our sky), but the beam of light next to it will make it to your eyes, and on average, the whole sun appears nice and bright and untwinkling in the sky.  (Likewise, the moon doesn’t appear to twinkle, either.)\n\nIn space, there’s no atmosphere, no air to change the trajectory of light reaching your eyes (assuming your eyes are safely enclosed in a spacesuit with the rest of you), so the stars will not twinkle.  \n\n\nRyan Wyatt\nRose Center for Earth & Space\nNew York, New York
874063
You might have seen a planet if it was bright, but also a lot of stars are red.  Cooler stars give off a red color.  There is nothing unusual about it.
965023
FIRST and foremost, simply, on the ocean you have a wider field of view. So ,  because of the increased area in view, you actually do see more stars. And i most certainly concur with other good answers, in that the lack of  'light pollution' is no doubt almost as helpfull as a good old fashioned pair of binoculars. Amazing what one can do with a little glass.
556010
The sky is (roughly) that part of the atmosphere or of outer space visible from the surface of the earth (or any other planet; see Skies of other planets). Birds, airplanes, and kites are often considered to fly in the sky. It is difficult to define precisely for several reasons. During daylight the sky has the appearance of an opaque blue surface, but this is the result of the air scattering sunlight. [1]There is no "blue object" above the earth in any normal sense, so it is hard to say what object the sky is. The sky is thus sometimes defined as the denser gaseous zone of a planet's atmosphere. At night the sky has the appearance of a black surface or region scattered with stars. But if we then say that the sky is the entire visible universe, it would not be the same thing we see during the day. The color of the sky is a result of diffuse sky radiation. On a sunny day the Earth sky usually looks as a blue gradient — dark in the zenith, light near the horizon (due to Rayleigh scattering). It turns orange and red during sunrise and sunset, and becomes black at night.\n\nDuring the day the Sun can be seen in the sky, unless covered by clouds. In the night sky (and to some extent during the day) the Moon, planets and stars are visible in the sky. Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae. Lightning can also be seen in the sky during storms. As a result of human activities, smog during the day and light radiance during the night are often seen above large cities (see also light pollution).\n\nIn the field of astronomy, the sky is also called the celestial sphere. This is an imaginary dome where the sun, stars, planets, and the moon are seen to be travelling. The celestial sphere is divided into regions called constellations.\n\n\nSky in religion\nMany cultures ascribed strong religious qualities to Earth's sky, believing it to be the home of the heavens and various deities. Among the Chinese, in certain situations, sky means god. For example, people may say "They became friends after several fights: this is the idea of the sky" or "Why does the sky always fool me?" Some religion and art historians believe that in Christianity, in particular, the connection between heaven and sky arose because of a medieval painting technique, where different places were drawn separately on the same picture. Heaven, a different and more important world, was usually painted above the earthly world and was separated from it by clouds.\n\n\nExpressions\nA pie in the sky is something that is wanted very badly but is unobtainable. \nWhen someone's assumptions or premises concerning a particular subject seem to be radically different from everything you know and recognize about the world, you wonder what color the sky is in their world. \nSimilarly, because the blue hue of the sky during daytime is such a universally observed and understood phenomenon, people say "as sure as the sky is blue" to mean that something is an indisputable fact. \nBlue skies are evoked as a symbol for good times, optimism and emotional peace. \nTo be sky-clad means to be in the nude. \nSimilarly, to go skying is a euphemism for stripping or streaking. \nTo show that there are no limits on what we can discover or accomplish, you can say, "The sky's the limit!" \n"Blue sky thinking" means coming up with a host of ideas without being restricted to what is practical (similar to brainstorming); in particular, an optimistic assumption is made that there will be no obstacles or opposition to implementation of the ideas. \n"The sky is falling" is a common expression that is used when any sort of disaster is occurring. This came from the fable Chicken Little
682284
yes u can see them .go far awy from city where there is vry less artificial light source n enjoy this event at dark night .u can see them moving as though a star is moving . satellite don't flicker.\n\nor see tht in film the octubar sky.