Black holes

Published June 29, 2016

Black holes

Today, at least, heard or read about black holes. But there was a time when that name was neither scientific nor popular literature. Black holes - this is causing huge gravitational forces. They occur when a strong contraction in the course of a large mass of material increasing its gravitational field becomes so strong that not even light produces...

Universe is expanding

Published August 21, 2016

Universe is expanding

Let us imagine an astronomer who is at the center of the universe. What did he see? All the stars, galaxies and nebulae are rapidly moving away from it. It is hard to imagine but the picture will look like it is such an amazing way. The remarkable resolution of these difficulties was the assumption that the universe is expanding...

Space nebula

Published October 08, 2016

Space nebula

The distant nebulae are clusters of many millions of stars. They are a kind of island in the universe, distant from each other by enormous distances. A light year is 9600000000000 km, is used as a unit for the measurement of distances between stars. So, some of the space nebula away from us at a distance of 350000000 light years!..

Variable stars

Published October 08, 2016

Variable stars

We now know that the stars belonging to many distant nebula, there are variable stars, surprisingly changing its luster. Their luster changes strictly periodically, subject to a certain law. It made an important discovery that the period of light variation depends on the true brightness of a star...

The speed of the Earth

Published October 08, 2016

The speed of the Earth

The speed of the Earth in its orbit is quite large - 30 km/s. It is 1/10000 of the speed of light. You can spend an interesting experience, using an enormous speed of the Earth as it moves in its orbit. If we move in the direction of the light source, the light signal can be taken faster than away from it...

Milky Way galaxy

Published October 08, 2016

Milky Way galaxy

Our solar system is a tiny part of the Milky Way galaxy. The Milky Way is a huge system of hundreds of billions of stars, nebulae, and hundreds of thousands of star clusters. "Milk River, flowing through the universe." It describes the Milky Way until 1610, when Galileo saw in his telescope...

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