World revolve around the sun is the orbit to take 365.25 days to complete 1 round each calendar year is 365 days, which means 1 / 4 of the remaining days in each year. The fourth year is every year is a special day that is 366 days in February will have 29 days instead of 28 days as usual. As Kepler discovered the world's orbit is not circular. In December it will be near the sun than in June. Which it is located far from the sun the most. The world is tilted to the line core. In June. Northern Hemisphere is tilted toward the sun, so. Northern Hemisphere is summer and south hemisphere is winter. In December, will tilt from the sun Sun Made over the winter hemisphere and the southern hemisphere summer. In March and September. While the world is not tilted, both to the sun Sun Day and night are equal length. In March. Northern Hemisphere is the spring. And southern hemisphere is autumn. In September. The situation will reverse.
Old world about 4,700 years the world has not totally sphere. Perimeter length of the equator 40,077 km (24,903 miles) long and the world that Kae 40,009 kilometers (24,861 miles).
Other planetary satellites. Have their own seasons and phases of the orbit. Long years of planets, it is time to rotate around the sun one. If you were on Stars Wed Year you will have only 88 days of world growth on a planet-star pool outside the top 248 will be equal to one year on Earth Day.
Moon.
Moon is a satellite of the world. Orbit around Earth every 27 days, 8 o'clock, and while it does revolve around the core itself has just completed a round with. We see the same moon. Whether the view from where in the world. The other half. People just to see pictures. When to send spacecraft into space has. On the lunar surface in the area is very hot sun. And cold in the West at the Rio that phantom. The surface of the moon has many vent holes. A thousand other holes. From small holes to large holes arid deserts and volcanoes.
Moon is the biggest stars. And light in the night sky. Moon light. But that does not emit light emission from the moon itself. When the moon is the light from the sun will reflect the light out. Moon near the world's most. But it also is far more. Ten times the linear distance around the world to shorter distance from Earth to the Moon.
Cycle of the moon.
We already know that. If the lunar month marks. Then the moon will revolve around one of the world lasted 29 1 / 2 days if we are since the beginning of the day the moon moonset (New moon) is over the moon. Is linear between the world with sun Sun Moon made opaque. People in the world is invisible moon. Then the next day more gradual. We will see a crescent moon light the western horizon. And will see the moon high in the western horizon. To the east. With a greater fraction of light. Enough to last 7-8 days in the bright half moon night in the middle piece fits heaven (Quarter) days later to add light fraction increasing. 14-15 days until the night the moon will be in direct line. Between the sun and the world. Make light of full moon (Full moon) after the moon has become a waning moon. The moon will slowly building. And disappeared in the sky to see the month end. Then restarted. This is the building. Of the waxing moon waning moon. Because the moon orbiting around Earth 1 rotation around itself as it fits around 1, which takes approximately 1 month, so we see the crescent moon is only one time.
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