Unlike planets, comets move on highly elongated orbits, and therefore are visible only at short periods close to the Sun.
The main part of any comet is its nucleus .
According to the hypothesis of the famous American researcher of comets Fred Lawrence Whipple, cometary nucleus is an ice consisting of a mixture of frozen water and frozen gases interspersed with refractory rocky and metallic particles . Figuratively speaking, it looks like a “dirty iceberg”.
Let us imagine that we see the newly opened the comet, which is somewhere in the vicinity of Jupiter’s orbit. Seeing through the telescope hazy pale speck, like a spherical nebula (such unattractive are presented to the observer of a distant comet), we may be disappointed at first. With the approach of the comet to the Sun the solar flux increases. Comet “ice” begin to evaporate rapidly. Around the nucleus formed a vast glowing gas shell – coma. Together with the core of it is the head of the comet. Continue reading
Length of day:
To 9.93 hours
Jupiter is the fifth planet from the Sun and the largest planet in the Solar system. The surface of Jupiter are not made of stone, in contrast to the terrestrial planets closer to the Sun. The planet Jupiter is a huge ball of gas the size. Composition of atmosphere: hydrogen(85%), methane, ammonia, helium(14%). The composition of the atmosphere gas giant similar to the Sun. Jupiter radiates into space more heat than it receives from the Sun. The origin of this energy processes occurring in the core of the planet with hydrogen under huge pressure at which the gas acquires properties similar to metal.
Jupiter rotates so quickly that the planet is elongated along the equator. This intense rotation is the cause of hurricanes on the surface of the atmosphere where the clouds look like long stripes of different colors, rotating along the equator of the planet, often in opposite directions. Continue reading
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