Our universe - one big puzzle over which puzzled many scientists and researchers.For a long time interest in planet Earth and its "neighbors" do not give sleep to tens of thousands of people.Today, scientists have moved many steps forward in their research and answer the question, but only some.The rest of the space is a great mystery to mankind.
Earth and the nearest star
Earth, as we know, is not the only one in the universe, and not the large (small) size.But it really is unique for many reasons.Among them: the presence of water and oxygen, which helps us to live the unique soil, minerals, perfect distance from the sun, and more.Quite often, people want to know about what is happening outside our planet.
nearest star to Earth is also interesting for lovers of the unusual.Sun has long been known as the huge balloon, which is near to our planet.As you know, this unique star is different from all the others: it consists of hot plasma and stay close to her can not be no creature in the universe.
Feature Sun
Scientists have established that it is the sun takes 99.8% of the total mass of the system.In addition, the star is a source of energy, thanks to which there is everything that we see around us.Not in vain ancient civilizations worshiped the sun.They are well aware of its importance in our lives, and worshiped him.
interesting fact is the size of the sun.Scientists say that it can be placed inside the 1300 Planet Earth.In addition, it is like a magnet, attracts other objects and satellites, as well as cosmic dust, asteroids.
Features Sun
It was found that the closest star to Earth - the Sun, therefore (and for many other reasons), he was given so much time.As a result, research scientists have found that it was formed from a cloud of gas and dust about 4.6 billion years ago.We know that the sun heats up very slowly, absorbing all of the hydrogen being around.Thus, a few billion years it reaches the peak point.Perhaps the nearest star to Earth is so enlarged that engulf the inner planets, including our own.
No less interesting is the fact that the sun is white, while all the people it is associated with a red or orange.By studying the solar system, you can see the stains on the plasma of the star.This is due to strong magnetic fields.It is believed that the activity changes over eleven years.When it is minimal, then practically no sun spots.It should be noted that the light is emitted wind and charged particles that fly around the space, affecting the nearby planet.If the Earth's magnetic field is absent, these elements would destroy us.This invisible barrier keeps us alive for several million years.
The nearest star to Earth
celestial bodies and phenomena always attracted people.Many people are interested in what the star closest to Earth.Almost all researchers argue that it is the sun, but there are other suggestions.According to some scholars, the approximate star - HD 140283 subgiant - is thus an object that researchers have been looking for.Space Age longevity is 13.2 billion years.
Still, many are inclined to believe that the Sun - the closest star to Earth.In fact within a radius of 5 pc (16.308 St. Years) has lots of space objects that are close to our planet.Total to date 57 known star systems.
Feature HD 140283
So, according to some scholars, HD 140283 - the nearest star to Earth.Explore it in more detail, they found that the survivor space refers to a rare type of giant stars.This group includes objects whose mass is above the main sequence stars, but below major.Subgiants today is from the Earth at a distance of 186 light years.The composition and characteristics of HD 140283 allow to carry it to the second population, that is the group that brings together the most ancient stars.Such luminaries jokingly referred to as objects that appeared in the youth of our universe.
Unfortunately, the oldest and closest star to the Earth slowly fades away, that is losing its brightness.Examining light more detail, scientists have come to the extraordinary conclusion that the age of the facility exceeded the existence of the entire universe.
There is such a thing as "Methuselah," which means "the biblical survivor."HD 140283 is to claim the name.But at the moment the star to compete with other red dwarf, which may be the same age, or her little brother.
Thus, around our planet are many nearby stars that light up the night our land, but do not hurry to reveal to us the mysteries of the cosmos.Sun also crucial role to play.
