Already at the dawn of humanity ancient people turned their eyes to the night sky.Astronomers first civilizations trying to count the stars, which are then presented to them forever fixed points of the sky.Over time, science has evolved, ideas about the world and astronomy.However, interest in celestial bodies only increased.
Amazing Star
In modern times, it has been found that all these stars that are smaller or larger than the Sun, are bodies like our luminary.But after centuries of research, they still have not revealed all its secrets to mankind.In modern astronomy and astrophysics literally every few years are made sensational discoveries.They suddenly asked scientists amazing puzzles or even change our ideas about the nature of things.The stars, which are smaller than the sun suddenly shines a thousand times brighter than a millennia observed point in the heavens are a whole system of several bodies and so on.This bunch is the closest star to our system, Alpha Centauri, where around a common center of mass of rotating three hot body.
biggest stars of this system Centauri A somewhat more of our native luminaries remaining two stars are smaller than the sun.In the following text we will take a closer look at some of these amazing objects in our universe.
stars, which are bigger than the Sun
in our galaxy many such bodies: giant stars, subgiants, supergiants, hypergiants.For example, the weight of blue supergiants may exceed 10-20 times solar.This means that the size may be larger than our star a hundred times, and shine a thousand times brighter.Their blue color indicates the terrible heat.An example is the star Rigel - the brightest body in the constellation Orion.But even these dimensions and luminosity pale in comparison with the really gigantic objects.The biggest stars of our universe are so-called hyper giants.A typical representative of this class will be several times more massive than even giant Rigel and 200-250 times more massive than our sun.However, such facilities are rare in the Universe.Interestingly, their lifespan is small enough for the stellar standards.They are incredibly bright shine, sometimes outshining entire galaxies, but quickly consume their fuel materials.
stars, which are smaller than the sun
live longer small stars that are economically and slowly exhausting its potential.Stars that less solar usually more dull.For this breed include numerous dwarfs: orange, red, brown, white.By the way, our star also is a yellow dwarf.The star Epsilon Eridani in the constellation also belongs to a class of yellow dwarf, but its mass is slightly less sunny - 85%, and the luminosity of only 28% compared to the brightness of our sun.Amazing properties are called brown dwarfs.Their weight, usually from 1 to 7% of the solar mass.Thus, they are in this respect, even closer to the planets like our Jupiter.Actually, brown dwarfs, and can not be called high-grade luminaries.Astrophysicists often characterize them as failed stars.Of course, their luminosity and temperature are also hundreds of times smaller than the sun.To date, the coldest of the brown dwarf known to science has a surface temperature of just 25 degrees C. It is interesting that some of the stars, which are smaller than the sun, at the same time may have more than he has, mass.This is the so-called neutron stars.They are the end products of stellar evolution.What remains of the light after the supernova.The radius of the pulsar (as they are also called) are usually compressed to 10-20 kilometers in diameter.A negligible distance, are not comparable to the largest asteroid.But at the same neutron stars - it's incredibly compacted body with a mass of 1.5 solar.Total handful of substances taken from the body of such an incredible plane would weigh thousands of tons.
