The nearest star to the Sun is currently Proxima Centauri. It is a distance of about 4.22 light years from the Sun.It is very likely that Proxima Centauri is gravitationally associated with the two stars of Alpha Centauri system since the separation is only 0.21 ly about 15,000 AU but no evidence of an elliptical orbit associated with a binary star has not been found. If this is correct then eventually Alpha Centauri A & B will become the nearest stars to Earth at a distance of 4.36 ly.
Alpha Centauri is a binary star system, commonly known as Alpha Centauri ABAlpha Centauri A is about the same size and age as our Sun with a spectral type of G2VAlpha Centauri B is about 14% smaller that our Sun and a lot cooler having a spectral type of K1VThere is a third star, not surprisingly called Alpha Centauri C or Proxima Centauri which is the closest star to Earth.See related link for more information.
For stars closer than about 400 light years (LY), we can directly calculate the distance using trigonometry and the parallax shift of the "nearby" stars as compared to the more distant stars far away. By observing the nearby star at times 6 months apart, we have a "baseline" of 2 AU distance, and we can calculate the distance. The closer, the more accurate, of course. Since Proxima Centauri is only 4.2 LY away, our calculation is pretty much spot-on. Beyond about 400 LY, our distance estimates are based on the difference between the relative magnitude of the star (how bright it looks to us) as compared to the "absolute magnitude", the brightness that we calculate based on the star's spectrum, size and color. So for the red supergiant star Betelgeuse, our estimated distance of 650 LY could be off 140 LY either way!
Within 5 parsecs of the Sun, there are about 20 known stars. This region is part of the local stellar neighborhood, which includes the closest stars like Proxima Centauri, Alpha Centauri A and B, and others. The number is relatively small due to the vast distances between stars in our galaxy.
Yes, the length of an object is measured by the distance between its two endpoints. This distance is typically measured in units such as inches, centimeters, or meters.
The Oort cloud. It's actually not specifically between the solar system and Proxima, it's more like the outer layer of the solar system.
The nearest star to the Sun is currently Proxima Centauri. It is a distance of about 4.22 light years from the Sun.It is very likely that Proxima Centauri is gravitationally associated with the two stars of Alpha Centauri system since the separation is only 0.21 ly about 15,000 AU but no evidence of an elliptical orbit associated with a binary star has not been found. If this is correct then eventually Alpha Centauri A & B will become the nearest stars to Earth at a distance of 4.36 ly.
The nearest star neighbors to the Earth are three stars that make up a multiple system. To the naked eye the system appears as a single bright star, Alpha Centauri. Alpha Centauri is a double star -- two stars revolving about each other that are too close to be seen as separate by the naked eye. Near them is the third member of the system, a faint star known as Proxima Centauri, our sun's closest neighbor. Proxima Centauri is 4.3 light-years from the Sun (and Earth). It lies at a distance of over 24,000,000,000,000 miles, about 270,000 times farther than the distance between the Earth and the Sun.
The Space shuttle cannot go beyond low earth orbit, but assuming you were traveling at the shuttle's orbital speed of 17,600 mph it would take approximately 7 months to reach the sun (the nearest star to earth), and approximately 160,000 years to reach Proxima Centauri, the nearest star to the sun.
The distance between two points is the distance between them. It doesn't depend on the method an object uses to move between the two points. It also doesn't depend on what route an object follows between them, or even whether or not anything moves between the two points. The distance between the earth and the Orion Nebula is the distance, even though no object has ever moved between the earth and the Orion Nebula.
It would take thousands of years to travel to the closest star, Proxima Centauri, using current space shuttle technology. The distance between Earth and Proxima Centauri is about 4.24 light years, which is equivalent to about 25 trillion miles.
Impossible to tell all of them, so the one closet to our sun is Proxima Centauri. It is 4.243 light years away. (24,942,474,700,000 mi)
The distance between the countries can be find by travelling
Distance is measured in kilometres, such as the distance between two towns, or the distance from the Earth to the Moon.
Distance is one of three factors affecting the "apparent" magnitude of a star. The other two are "absolute magnitude", or how bright it REALLY is, and the amount of dust and gas between the other star and our solar system. For example, the closest star to Earth (other than our Sun, of course) is Proxima Centauri, 4.2 light years away. Proxima Centauri is NOT VISIBLE to the naked eye; it is a tiny red dwarf, so dim that you need a telescope to see it.
I can only assume you mean to ask the difference between Spica and Proxima Centauri. Spica, or Alpha Virginis, the 15th brightest star in the sky, is a blue giant. It's about 250 light years from Earth. Proxima Centauri is only 4.24 light years from the sun, the nearest known star ( apart from the sun) to Earth. It's a red dwarf and invisible to the naked eye.
Alpha Centauri is a binary star system, commonly known as Alpha Centauri ABAlpha Centauri A is about the same size and age as our Sun with a spectral type of G2VAlpha Centauri B is about 14% smaller that our Sun and a lot cooler having a spectral type of K1VThere is a third star, not surprisingly called Alpha Centauri C or Proxima Centauri which is the closest star to Earth.See related link for more information.