contain

Solar system

Solar system. Planets of the solar system

Its center is a huge star called the Sun. It is the closest star that is billions of years gives us light and heat. Without it, impossible would be life on the planet. Around it revolve the planets, of which eight are known today, as well as other celestial objects.

Schematically, the structure of the solar system is as follows:

Man is always interested in the question thus arose our solar system. But it was a long time before scientists were able to answer this question. There were many versions and assumptions on this issue. And today, astronomers are continuing their investigation.

According to a hypothesis of Kant-Laplace five billion years ago there was only a gas cloud. It moved through the universe, but at some point he undergoes certain processes. Then there is compression and then begins the rotation, the center of rotation is the fastest. The temperature at the center of the cloud began to grow and formed a protostar that later became the Sun. The nebula continued to spin, and the star are unable to absorb all the substance of the nebula, they are attracted, experienced, forming planetesimal. One of them appeared on the planet. Continue reading

NASA has selected six volunteers for an experiment to simulate a flight to Mars

A scene from the upcoming film “the Martian”.

In the United States selected an international team of scientists from six volunteers to participate in a new experiment simulating conditions on Mars. Within 365 days they will be completely isolated from the outside world on the slopes of a sleeping volcano Mauna Loa in Hawaii, which resembles the landscape of the red planet.

This is the fourth such experiment in 2020. The first two groups was in seclusion in self-contained complex in Hawaii for four months, the third managed to survive in isolation for up to twice as long – eight months. New group aims to raise the bar, “duration of survival” in the conditions simulating the Martian, to a new level. By the way, the experiment begins next week – August 28.

“The longer becomes each mission, the better we understand what are the risks from space travel,” said scientific project Manager Kim Binsted.

The organizers of the experiment hope that it will help to prepare the first manned Martian mission, which, according to estimates of NASA, will take place in 2030-ies. Continue reading

Planets of the Solar system

Jupiter thousands of years ago named after the king of Roman gods, and reigns among the nine planets of our Solar system, rivaling the Sun in its splendor. The largest planet is located far beyond the main asteroid belt. The mass of Jupiter exceeds the mass of all other planets combined.

Jupiter is the largest planet in the Solar system. The semimajor axis of Jupiter’s orbit is 5.2.e. the eccentricity of the orbit e = 0,0489, the period orbits – 11,867 years. The inclination of the orbital plane to the plane of the Ecliptic is 1°1817″. The average speed along the orbit – about 13.1 km/s.

The period of rotation around the axis is 9 hours and 55 minutes. Each dot on the equator moves at a speed of 45 thousand miles per hour. Due to the centrifugal force of Jupiter is noticeably flattened (compression rate greater than 6 %). Since Jupiter is not a solid ball, and consists of gas and liquid, the Equatorial parts rotate faster than the polar regions. The rotation axis of Jupiter is nearly perpendicular to its orbit, therefore, the planet has no seasons.

The mass of the planet is M = 318 M = 1,9∙10 27 kg, radius R = 11,2 R = 71 492 km, However, Jupiter is very thin: its density is 1.33 g/cm 3. which is four times less than the density of the Earth. The acceleration of gravity at the level of the cloud surface of Jupiter sostavljaet = 2,53 g. Continue reading

The earth passed through the tail of Halley's comet
Halley's comet is the only short-period comet that is clearly visible to the naked eye Halley's comet is the most popular of comets. It rotates around the Sun with a…

Continue reading →

The triumph and death of the lunar Rover
Russian space systems holding (RCS, part of the Roscosmos state Corporation) continues to publish unique historical documents from 1972 that reveal previously unknown details of the history of space exploration.…

Continue reading →