The sun appears to move across the Earth's sky as a consequence of the Earth's rotation. As Earth turns on its axis, an observer on the surface sees the sun appear to come up somewhere over the eastern horizon, rise to a peak around midday and then begin its descent toward the west. This cycle varies slightly from one latitude to another, as well as from one day to another.
Earth spins once on its axis every 24 hours. To a stationary observer at most locations on the surface of the Earth, this motion imparts the appearance of motion to the sun. The exact spot on the local horizon where the sun appears to rise is dependent on where on the Earth the observer is located and what time of year it is.
In addition to spinning on its axis, the Earth inclines at about 23 degrees. This tilt brings first one and then another hemisphere into position to point more directly toward the sun. For observers in tropical latitudes, this motion causes the sun to cross the sky higher and higher throughout the spring until the summer solstice, when it begins moving back down toward the horizon. To an observer near the pole, the sun rises above the horizon only from late spring to early fall. It appears to circle the horizon during this time and disappears entirely through the winter months.Learn More
The time it takes to orbit the Sun depends on the planet. Because of gravity, the mass of the planet and other considerations, objects closer to the Sun tend to have a faster orbit. Earth, the third planet from the Sun, takes 365.26 days to orbit the Sun.Full Answer >
According to CNN, a solar eclipse is only a total eclipse for those areas of the Earth directly beneath the moon's shadow. Since the moon is much smaller than the sun or the Earth, it may only completely block the sun's light over part of the Earth's surface. Anyone outside this full shadow may see a partial eclipse, but it will not achieve totality.Full Answer >
The apparent movement of the Sun describes the perceived phenomenon that the Sun moves through each zodiac constellation, making a full revolution around the celestial sphere every year. This is not factual; it is Earth's orbit around the Sun, on its 23.5-degree tilted axis, that gives this impression.Full Answer >
Hydrogen and helium combine to form more than 98 percent of the sun’s mass, and they represent over 99 percent of the atoms in the sun. Oxygen is the third most abundant element found in the sun, as it is responsible for almost 1 percent of the sun’s mass. The other constituent elements include carbon, nitrogen, silicone, magnesium, neon, iron and sulfur.Full Answer >