What is the name of the brightest star that is visible from earth?
104284
The Sun named Sol is definitely not only the brightest star, but the brightest celestial object visible from Earth.  However, if you're talking about the night sky (excluding the sun), then the brightest star would be Sirius A.
92547
This is a very difficult question. We don't really know how many stars currently exist, so let's rephrase the question to "how many stars in the night sky visible to the naked eye still exist?" (An easier question would be "does star xyz still exist?") If all of these stars are classified into groups whose average lifespans are known, and if the current ages of these stars can be estimated, then using the estimated time that light takes to travel from a particular star to Earth, we can determine if the star has already gone supernova, or if it has darkened. Since most stars visible to the naked eye are relatively young (as compared with super-distant stars visible through huge telescopes), it is likely that a significant proportion of them do still exist. But, again, the question is extremely difficult, but makes for some good thinking.
81224
It depends on where you live. But most reported "star" is Venus, a very bright yellow/white blob on the sky setting or rising a few hours after or before the Sun. It has two old names "Evening star" and "Morning star" refering to it setting just after the Sun sets, or rising just before the Sun rises.
742206
The Geminids ramp up over a few days, and should be visible most of the night, from around 10PM to dawn. Basically you need a location where you can see as many stars as possible.
323618
That would be comet 73P/Schwassmann-Wachmann starting about the end of April and until about June 15th.  Uncertain how bright (as with most comets) will become, but it will be relatively close to earth at 11 million miles.  It should be visible as it travels through the constellation of Hercules and glide past the star Vega on its journey.  On May 11, it  will be in the constellation Cynus the Swan (aka the Northern Cross).  It will continue through Pegasus and Pisces, and dim from view in Cetus in mid June.
365816
Depends on your location.  From the United States, you can find the constellation Scorpius low in the southern sky primarily during the summer months.  Currently (early April), it's at its highest around 5am DST.  Early next month, it will be most visible around 3am DST.  For each successive month, it's at its highest about two hours earlier than in the previous month, so by early August it will be best seen around 9pm DST.  It's low in the sky, however; even from the southern states, its brightest star Antares never rises higher than about 1/3 of the way from horizon (where the sky meets the ground) to zenith (directly overhead).\n\nA side-note; you may notice a very bright "star" this spring and summer, somewhat higher and to the right of Scorpius; this would be the planet Jupiter.\n\nA good site that generates a sky chart for any location can be found at:\nhttp://www.heavens-above.com
899359
the trick is to know a few key stars (bright) by name. if you can identify, say, sirius, vega, altair, deneb, antares, arcturus, then you have pinned down the major constellations.\n\nthe only planets you can see with the naked eye are venus, mars, jupiter and saturn and very rarely, mercury. uranus is just at the limit of possibility on an extremely clear night with excellent vision.
27902
It's name is Polaris and is the brightest star in the Ursa Minor constellation. This can help you more: \nhttp://en.wikipedia.org/wiki/Polaris
1136943
M31, the Andromeda Galaxy, is the most distant object easily seen with the naked eye. In a very dark sky, you may be able to see M33, which may be 3 million light years distant.\n\nIt's a little more difficult to determine what is the  most distant individual star that can be seen with the naked eye, as it is apt to be some faint, nondescript star. Also, it is difficult to accurately determine the distance to a single star at distances over 1500 light years. P Cygni, a fifth magnitude star in the constellation Cygnus (the Swan or Northern Cross) is a very luminous star possibly 6000 light years away. This is probably a reasonable approximation of how far away a star can be seen. Note that this is still in our Milky Way Galaxy, which is around 100,000 light years in diameter. However, you might be able to see a supernova in a nearby galaxy.  SN1987A in the large Magellanic Cloud reached third magnitude, and it was fairly dim for a supernova.  (About magnitudes: six is about the dimmest visible, smaller numbers are brighter. The brightest star, Sirius is -1.)
125326
SIRUS  (the dog star) IS The brightest of all stars, Sirius, belongs to this constellation.\nIt borders to Monoceros in the north, Lepus to the west and Columba to the southwest while the eastern border is covered by Puppis, therefore it streches roughly from RA = -11 degrees to RA = -33 degrees and Decl = 6h 15m to Decl = 7h 30m, respectively.
448237
It really depends on where you are.  For northernly latitudes, Ursa Major (big dipper), Ursa Minor (little dipper), and Cassiopeia are generally visible on any night of the year.
24213
The biggest known star is the Pistol Star.Its size is about 100 times the Sun!It is ten million times brighter than the sun.It is also largest in terms of volume.   Born up to three million years ago, the Pistol Star may have weighed up to 200 times the mass of the Sun before shedding much of its weight in violent eruptions that began about 4,000 to 6,000 years ago.The Pistol Star is invisible to the naked eye because it is hidden 25,000 light-years away behind great dust clouds in the center of our Milky Way Galaxy.It is located in Pistol Nebula in the centre of Milky Way Galaxy.
1149332
Jupiter is in the Scorpio constellation until Nov. 24, 2006.  You can see Jupiter just after sunset and will the brightest star in the sky.
534572
Orion constellation, with three bright stars forming its belt, "las tres Marías" (The three Mary´s). Next to the belt, you will find Orion´s nebulae, a spiral galaxy, like our own. The shoulder of Orion is characterized by Rigel, a bright reddish star.\nClose to Orion, is Can Majoris (the great dog) featuring Sirius, the brightest night star in the whole observable sky from Earth. \nTo the other side of Orion (i.e. to its left and closer to the horizon), there´s a "V" shape with a nice red star (Aldebaran) which represents the eye of Taurus (The bull). \nLeft to Taurus, there´s a beautiful open cluster called The Pleyades (in the story, I think the brightest stars  represent seven sisters, but you´ll surely be able to count many more). \nIn the opposite side of the sky, you will find the Southern Cross (La cruz del sur). You can recognize it because of the four bright stars defining a clear cross. If you extrapolate the long axis of the cross four times toward where the cross is pointing, you´ll find the celestial northern pole: the point around which all the stars revolve during the night in the southern hemisphere. Besides, if you draw an imaginary line from that point in the sky to the ground, you´ll get South. An excellent way to get orientated in the field. To a side of the cross, you´ll see two bright stars: alpha and Beta Centauri. Alpha is the closest star to the Earth. \nMost of these features are more prominent during summer, but you can also see them in winter fro a brief period. \nAlso during winter, one of the best constellations is Scorpius, featuring Antares, the Red Giant. \n\nThat´s all I recall. \nIt´s a very interesting sky! Consult your charts to get the most out of it. \nHave fun!
306388
This is entirely dependant on your latitude.\nIf you go to Amazon, and search for planisphere, you will find an array of maps which you can use to determine when stars will be visible. You will need to know your latitude before you buy one though, as they are calibrated for particular values. You should be able to find the same in a local bookshop, and these will probably be at the correct latitude for you.
752575
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). \n\n\n---------------------------------------------------------------------------------\nStars, except for the Sun, although they may be millions of miles in diameter, are very far away.  They appear as point sources even when viewed by telescopes.  The planets in our solar system, much smaller than stars, are closer and can be resolved as disks with a little bit of magnification (field binoculars, for example).\n\nSince the Earth's atmosphere is turbulent, all images viewed up through it tend to "swim."  The result of this is that sometimes a single point in object space gets mapped to two or more points in image space, and also sometimes a single point in object space does not get mapped into any point in image space.  When a star's single point in object space fails to map to at least one point in image space, the star seems to disappear temporarily.  This does not mean the star's light is lost for that moment.  It just means that it didn't get to your eye, it went somewhere else.\n\nSince planets represent several points in object space, it is highly likely that one or more points in the planet's object space get mapped to a points in image space, and the planet's image never winks out.  Each individual ray is twinkling away as badly as any star, but when all of those individual rays are viewed together, the next effect is averaged out to something considerably steadier.\n\nThe result is that stars tend to twinkle, and planets do not.  Other extended objects in space, even very far ones like nebulae, do not twinkle if they are sufficiently large that they have non-zero apparent diameter when viewed from the Earth.\n-------------------------------------------------------------\n\n\nI can be more specific, sure. Remember that just like a computer screen, your eye is composed of a certain number of "pixels," each represented by a single light-receptor cell in your retina. If two (or more) points of light are close enough such that they are focused on the same receptor cell in your eye, you will experience them as a single point of light. This is referred to as the "resolution" of your eye, or any telescope for that matter. \n\n\nNow, a star on the sky is in a true sense a single point of light. All the light comes through the atmosphere in exactly the same direction, through exactly the same atmospheric turbulence, and thus is bent in exactly the same way. So when it gets to your eye, the amount of light you see coherently varies. It also strikes (primarily) only a single receptor in your eye. \n\n\nOn the other hand, light from a planet is different. Each of a few receptors in your eye sees a large number of light rays coming f
416509
You can see many of them with the naked eye, and some of the get pretty darn bright.  You can even see the inetrantional space station when it passes overhead.  Of course any of these objects will jusst look like a star moving across the sky at a decent rate.  But it is pretty cool.\n\nhttp://www.heavens-above.com will tell you exactly what is visible from your location on any night, as well as where to look.  You'll need a little bit of amature astronomy knowledge (magnitudes, reading a starchart) to get much out of it, but it is an awsome resource for this kind of thing.