Презентация на тему It is interesting to know

Mars.

Sun and the smallest planet (0.055 Earth masses). The

Mercury has no natural satellites.

Earth, (0.815 Earth masses). It is much drier than

the Earth. The Venus has no natural satellites. It is the hottest planet, with surface temperatures over 400 ºC.

the inner planets and is the only place in

the universe where live is known to exist. The Earth's atmosphere is radically different from those of the other planets, having been altered by the presence of life to contain 21% free oxygen.

the Venus (0.107 Earth masses). It possesses an atmosphere

of mostly carbon dioxide. The Mars has two tiny natural satellites (Deimos and Phobos) thought to be captured asteroids.

Neptune

has 63 known satellites. The four largest are Ganymede,

Callisto, Io, and Europa, show similarities to the terrestrial planets. Ganymede, the largest satellite in the Solar System, is larger than the Mercury.

system. The Saturn has 60% of the Jupiter's volume.

The Saturn has 60 confirmed satellites. The Titan is larger than the Mercury and the only satellite in the Solar System with a substantial atmosphere.

outer planets. Uniquely among the planets, it orbits the

Sun on it’s side. The Uranus has 27 known satellites, the largest ones being the Titania, theOberon, the Umbriel, the Arieland, the Miranda

Uranus, is more massive (equivalent to 17 Earths) and

therefore more dense. It radiates more internal heat, but not as much as the Jupiter or the Saturn. The Neptune has 13 known satellites. The largest – the Triton.

a few kilometres across, composed largely of volatile ices.

Short-period comets have orbits lasting less than two hundred years. Long-period comets have orbits lasting thousands of years. Old comets that have had most of their volatiles driven out by solar warming are often categorised as asteroids.

is a spacecraft operated by NASA for orbital human

spaceflight missions. Major missions have included launching numerous satellites and interplanetary probes, conducting space science experiments, and servicing and construction of space stations. The system is scheduled to be retired from service in 2010 after 134 launches.

It was launched into an elliptical low earth orbit

by the Soviet Union on 4 October 1957, and was the first in a series of satellites collectively known as the Sputnik program. Sputnik-1 was launched during the International Geophysical Year from Site No.1, at the 5th Tyuratam range, in Kazakh SSR (now at the Baikonur Cosmodrome).

the first animal to orbit the Earth and the

first orbital death. Laika died a few hours after launch, presumably from stress and overheating, probably due to a malfunction in the thermal control system. On April 11, 2008, Russian officials unveiled a monument to Laika. A small monument in her honor was built near the military research facility in Moscow which prepared Laika's flight to space.