How far is  the earth from the star epsilon -indi-Bb? How  big and how heavy is this dwarf star?
345178
Epsilon Indi BB is one of the stars in a brown dwarf binary star system (the other being Epsilon Indi BA), which is 0.03 Solar masses (or 28 Jupiter masses), it is approx 133,260 km in diameter, and is nearly 12 light years away from our Sun.\n\nLook here for an article on Epsilon Indi, and Epsilon Indi BA and BB: http://www.spaceref.ca/news/viewpr.html?pid=12596
18276
Constellation Cassiopeia is about 10,000 light-years from Earth. The Bubble Nebula in it is 7,100 light-years from Earth.
449932
Your question doesn't have much sense, since the concept of "weight" exists for things that have a small mass relatively to the one they're next to (eg. a person and the earth)\n\nYou might instead ask what is the MASS of a star.\n\nOur Sun has a mass of approx 1.9891×10^30 kg,\nbut some have even 150 times the mass of the Sun (eg. Eta Carinae)
354168
the "smart kid" is incorrect about the size of the sun.  It is only 109 times larger than the planet earth.  The Sun's diameter is 864,938 miles (1,391,980 km). This is almost 10 times larger than the planet Jupiter and about 109 times as big as the Earth. The volume of the Sun is 1,299,400 times bigger than the volume of the Earth; about 1,300,000 Earths could fit inside the Sun.
251053
There are ~200,000,000,000 stars in our galaxy. There are at least 80,000,000,000 galaxies in the universe, and reasonable estimates are from 80 billion to 400 billion. Estimates of the total number of stars in the universe that I've seen start around 3 followed by 16 zeroes, and a reasonable approximation would be in the neighborhood of 4.8 x 10^22.\n\nNow, we don't know of a single star that is known to NOT have planets; in fact, any planet within an order of magnitude or two of the mass of Earth is far too small for us to even detect, with the exception of those in very unusual systems, such as the one in the link below, which orbits a pulsar (it's also 1/5 the mass of pluto, but even if it were Earth-sized, a pulsar probably wouldn't be very conducive to life forming).\n\nWe also don't know exactly what conditions it takes to form life, how long those conditions need to last, or how long planets normally stay within that range of conditions.\n\nHowever, we can make some estimates.\nThe sun is a G-type star, and, although F-K type stars might be capable of supporting life (and such make up ~64% of the stars in the galaxy), we'll ignore everything but the 18.7% of stars which are G-type.\n\nFurther, let's say that only 1 in 10,000 G-type stars has a planet capable of forming life.\n\nNow, there is, on average, about 1 supernova per galaxy per century, so we'll have to eliminate some candidate stars on that; say about 99% of eligible stars do not form life as a result of radiation bombardment from nearby supernovae.\n\nThen, let's estimate that it takes 100,000,000 years for life to form, and the average planet only has 4,000,000,000 years of its lifespan where life can survive. Then, we have to figure out how many planets have life at any given time. The approximate lifespan of the sun is 10 billion years, so we'll figure that's about average for a G-type star.\n\nWe'll assume that no star has more than one habitable planet, and that no life colonizes any other planets. Then, we'll figure that only 1% of the planets which are still eligible actually have life.\n\nThat still leaves 3-4 planets currently inhabited, in our galaxy alone, including Earth. Multiply that by, oh, say, 1% of the minimum number of galaxies in the universe (just for the fun of it), and we still get nearly 3 billion currently inhabited planets.\n\nSo, I'd say that the answer is a pretty resounding "yes". Although most of them would be extinct long before we could concievably detect their existence, and even if not, they would be extinct for many millenia before we could communicate with them.
1050263
Since the diameter of the sun is 864,000 miles and the diameter of a typical basketball is about 9½ inches (they vary from 9¼ to 9½ inches), if we divide 864,000 miles by 9½ inches, we discover that in our model 1 inch represents roughly 91,000 miles. To see how everything else fits into our model we need only divide any other dimensions of our solar system by 91,000. For example, Mercury, on the average, is about 36,250,000 miles from the sun. If we divide 36,250,000 by 91,000 we find that in our model it is roughly 398 inches-or about 33 feet away from the basketball. And, if we divide Mercury' s diameter of 3050 miles by 91,000, we find that the Mercury in our model is just .034 inches wide-about 1/30 inch. This is smaller than a typical BB. \n\nIf you know your stride (mine is about 2½ feet) you can put the basketball on the ground and pace this off. Better yet, if you have access to a football field at a local high school or college, place a basketball on one of the goal lines and walk out to the 11 yard line. This is where Mercury is.\n\nScientists believe that the solar system was formed when a cloud of gas and dust in space was disturbed, maybe by the explosion of a nearby star (called a supernova). This explosion made waves in space which squeezed the cloud of gas and dust. Squeezing made the cloud start to collapse, as gravity pulled the gas and dust together, forming a solar nebula. Just like a dancer that spins faster as she pulls in her arms, the cloud began to spin as it collapsed. Eventually, the cloud grew hotter and denser in the center, with a disk of gas and dust surrounding it that was hot in the center but cool at the edges. As the disk got thinner and thinner, particles began to stick together and form clumps. Some clumps got bigger, as particles and small clumps stuck to them, eventually forming planets or moons . Near the center of the cloud, where planets like Earth formed, only rocky material could stand the great heat. Icy matter settled in the outer regions of the disk along with rocky material, where the giant planets like Jupiter formed. As the cloud continued to fall in, the center eventually got so hot that it became a star, the Sun, and blew most of the gas and dust of the new solar system with a strong stellar wind. By studying meteorites, which are thought to be left over from this early phase of the solar system, scientists have found that the solar system is about 4,600 million years old!
40379
"The star, known as LBV 1806-20, tips the scales of stellar masses at about 150 times the heft of the Sun. It shines up to 40 million times brighter than the Sun. The previous title-holder called the Pistol Star, is a mere six million times brighter than the Sun and weighs about 100 solar masses."
25904
The next nearest star to earth (after the sun) is Proxima Centauri.\nWhat's really scary is that it would take you 4 years, travleing at light speed, to reach that star(space ships only travel 5 mi. per sec.) so in other words we aren't getting there any time soon. Hope this helped.
21520
Its actually not a star at all. Its the 2nd planet from our sun, Venus.\n\nYou can see it in the early morning as well.
28773
Probably just as big as it is now. Its diameter is 864,938 miles (109 times the size of Earth). \n\nThe sun is over 4.5 billion years old... so a billion years ago it was doing pretty much the same thing it is now. A lot of nuclear fusion going on. \n\nIt will stay the same size until it has used up its core hydrogen fuel, the star starts to fuse helium and eventually other elements. During this time the star will expand into a red giant or super-giant, becoming tens or even hundreds of times larger. Eventually, no more fuel will be available and the star will collapse under gravity to form a white dwarf star only a few thousand kilometres in diameter.
21064
The red dwarf star Proxima Centauri, part of the Alpha Centauri star system, is the nearest star to the Sun. As the name suggests, it is located in the constellation of Centaurus. Proxima Centauri was discovered in 1915 by Robert Innes while he was Director of the Union Observatory in Johannesburg, South Africa.\n\nProxima Centauri is roughly 4.22 light years from Earth, or 270,000 times more distant than the Sun.
913686
This is a simple ratio problem. The equation would be Dgalaxy/Dearth=Dearth/x so x=(Dearth)^2/Dgalaxy. Asssuming a parsec is 3.6 light years, and a light year is 5.87 trillion miles and the diameter of the Earth is 8,000 miles, then the Earth would be 0.001 millimeter or one micron in size, which is the size of an average bacterium, maybe? Very cool. Oops! I re-did my calculation and I see that I made a factor of ten error. The correct answer is about 0.1 microns, or the size of some viruses. But tell me how you would make such a model of the Earth?
488115
beside our Sun. Proxima Centauri is 4.2 light years away
62566
First find the Big Dipper constellation (Ursa Major) Find the two stars farthest from the dipper handle. Draw an imaginary line from the bottom star through the top star and extend the line outward. The first bright star your imaginary line comes near is the North Star---that's north.\n\nThe website shown has a diagram of the above.
438002
Senda - smaller than pluto, not a planet.\n2003 UB313 - bigger than pluto, not a planet\n\nThere are lots of objects just like Pluto out there, but right now it is a "planet" and the others are not.  The IAU's Division of Planetary Science is currently working on the whole planet issue, and we are supposed to have some sort of resolution to this issue by august of this year.  It is actually quite a mess over at the IAU right now.\n\nAs far as the universe goes?  We have found almost 200 objects that we call planets, but they are orbiting other stars.
1154048
The Chandrasekhar limit, is the maximum mass possible for a white dwarf (one of the end stages of stars when they cool down) and is approximately 3 × 1030 kg, around 1.44 times the mass of the Sun. This number is different in various articles, from 1.2 to 1.46 times the mass of the Sun and depends on the chemical composition of the star.
47202
around 10^22 to 10^24 stars.\n\nsearch for my previous answer.\n\nhttp://www.esa.int/esaSC/SEM75BS1VED_extreme_0.html