Planet Earth, the Solar system . and all the stars visible to the naked eye are in the milky Way Galaxy . which is a spiral galaxy with a jumper with two distinct sleeves starting at the ends of the jumper.
This was confirmed in 2005 a space telescope named the Lyman Spitzer, which showed that the centre bar of our galaxy is larger than previously thought. Spiral galaxy barred spiral galaxy barred (“bar”) of bright stars emerging from the center and crossing the galaxy in the middle. Spiral branches in these galaxies begin at the ends of the crosspieces, whereas in normal spiral galaxies, they come directly from the kernel. Observations show that about two thirds of all spiral galaxies have a bar. According to existing hypotheses, the jumpers are centers of star formation, supporting the birth of stars in their centers. It is expected that through orbital resonance, they are passed through a gas of spiral branches. This mechanism provides a flow of building material for the birth of new stars. Milky Way along with the Andromeda galaxy (M31),Triangle (M33), and more than 40 smaller galaxies-satellites, form the Local Group of Galaxies, which, in turn, is part of the Virgo Supercluster. “Using infrared images from NASA Spitzer telescope allowed scientists to discover that the elegant spiral structure of the milky Way has only two prevailing sleeves from the ends of the Central bar of stars. Previously it was thought that our galaxy has four main hoses “. Continue reading
Oceans, of course, is extensive, and the mountains are impressive for its size. 7 billion people is also not a small number. Since we live on planet Earth (whose diameter is 12742 km), it is easy for us to forget how we, in fact, tiny. In order to realize it, all we need to do is look into the night sky. Looking at it, it becomes clear that we are just a speck of dust in an unimaginably vast universe. The list of objects below will help to see the greatness of man in the future.
The largest planet (by diameter 142.984 km)
Jupiter is the largest planet in the Solar system. Ancient astronomers named Jupiter king of the Roman gods. Jupiter is the 5th planet from the Sun. Its atmosphere consists of 84% hydrogen, 15% helium with small admixtures of acetylene, ammonia, ethane, methane, and water vapor hospita. The mass of Jupiter is 318 times the mass of Earth, and its diameter is larger than the earth 11 times. The mass of Jupiter is 70% of the mass of all other planets of our solar system. The volume of Jupiter can hold 1300 planets the size of Earth. Jupiter has 63 known satellites (moons), but almost all of them are very small and dim.
The largest object in the Solar system (diameter 1.391.980 km) Continue reading
Its diameter exceeds the corresponding figure of our star 1.3 thousand times the brightness 1 million times
Astronomers from France in the constellation of Centaurus saw one of the largest stars in the Universe belonging to the class of yellow hypergiants. At this point the star is called HR 5171A, it is removed from the Earth is 12 thousand light years.
Star HR 5171A in presenting scientific artist / ESA
Instruments of the VLT telescope helped astronomers to estimate the size and other parameters of the giant star HR 5171 A in the constellation of Centaurus, whose brightness is about a million times higher than that of our Sun, and find her “secretive” companion, said in the journal Astronomy & Astrophysics.
“Observations of HR 5171 A has shown that this world is a neighbor, orbiting around it in close orbit, which is extremely surprised us. These stars are located to each other so close that they touch each other, and the whole system resembles a gigantic peanut walnut. This star-companion is interesting for us from the point of view that it could potentially “strip” the outer shell of a giant and thereby change the course of its evolution,” said Olivier Honestly from the Observatory of the côte d’azur (France). Continue reading