Solar system – 8 planets and over 63 of the satellite, which are opened more often, several dozen comets and many asteroids. All cosmic bodies move in their precise directional trajectories around the Sun, which is 1000 times harder than any body in the solar system combined. The center of the solar system is the Sun – the star around which orbits the turning of the planet. They do not emit heat and not light, but only reflect the light of the Sun. In the solar system now officially recognized as the 8 planets. Briefly, in order of distance from the sun, we list them all. And now a few definitions.
A planet is a celestial body that must satisfy four conditions:
1. the body must revolve around the star (for example, around the Sun);
2. the body must have sufficient gravity to have a spherical or similar shape;
3. the body should not be near its orbit of other large bodies; Continue reading
Now we prove the existence of 1783 planets in 1105 planetary systems. And the number of candidates is approaching three thousand. All in all, scientists assume that in our galaxy the milky Way is at least 100 billion exoplanets!
People have long realized that other stars, like the Sun, can have their own planet. And even gave them the name exoplanets or extrasolar planets, i.e. planets outside our Solar system. But to verify the existence of such planets a science was only in the late 1980s. Now it is proved the existence of 1783 planets in 1105 planetary systems. And the number of candidates is approaching three thousand. All in all, scientists assume that in our galaxy the milky Way is at least 100 billion exoplanets. 5-20 billion of them earth-like. Some of the most remarkable exoplanets.
Minitems, that is, exoplanets, which are less in size small even our Earth, Kepler-42 d (also known as KOI-961 d) revolves around the star Kepler-42 in the constellation Cygnus. The radius of the planet is just 0,57 ± 0,18 from the earth’s mass and less than 90 % of the mass of our planet. One year, one revolution around its star, Kepler-42 d lasts for less than 2 earth days. Continue reading
Jupiter, the fifth in distance from the Sun and the largest planet in the Solar system – distance from Sun-5.2 times further than Earth, and spends some turnover on orbit for almost 12 years. Equatorial diameter of Jupiter is 142 600 km (11 times the diameter of the Earth). The period of rotation of Jupiter is the shortest of all the planets – 9 h 50 min 30 s. at the equator and 9 h. 55 min. 40 s. in the mid-latitudes. Thus, the Jupiter, like the Sun, rotates as a rigid body – rotation speed varies in different latitudes. Because of the rapid rotation of this planet has strong compression at the poles. The mass of Jupiter is equal to 318 Earth masses. The average density of 1.33 g/cm3, which is close to the density of the Sun. The rotation axis of Jupiter is nearly perpendicular to the plane of its orbit. Even in a small telescope shows the polar compression of Jupiter and bands on its surface parallel to the equator of the planet
The Structure Of Jupiter
The visible surface of Jupiter is an upper level clouds surrounding the planet. This ensures that all details on the surface of Jupiter is constantly changing its appearance. From sustainable parts known Great Red spot, observed for over 300 years. It is a huge oval formation, the size of about 35,000 km in longitude and 14000 in latitude between the southern tropicheskii southern temperate bands. Continue reading