Because the Earth is rotating :D
Day and night, the planets constantly orbit the sun. This makes the planetary positions appear to change each night with respect to the background stars from the perspective of earth. So the positions do not change only at night, it is just at night we can see the positions have changed a little bit more.
Mars is visible in the night sky because it reflects sunlight, making it appear as a bright object. Its position in orbit around the sun means it can be seen from Earth during certain times of the year, usually when it is at its closest approach to our planet. This makes Mars one of the more easily visible planets in the night sky.
The star's position appears to shift slightly in the night sky during the year.
There are generally a couple of planets visible every night of the year. Which planets will be visible and when depends on where each of the planets (and the Earth itself) are in their orbits. Here on August 28, 2009, for example, Jupiter rises about sunset and is brightly visible all night. Venus and Mars rise before dawn. Saturn and Mercury are not visible this month, because they are too close to the Sun to be seen.
planets have moons for day and night
Constellation change position during the night due to the earth's multiple motions, such as the wobble and rotations around the sun.
Day and night, the planets constantly orbit the sun. This makes the planetary positions appear to change each night with respect to the background stars from the perspective of earth. So the positions do not change only at night, it is just at night we can see the positions have changed a little bit more.
The reason you can see planets and stars at night is that their light is faint and the brightness of the sun obscures them during the day. At night, when the sun is not visible, the fainter light from the planets and stars can more readily be seen.
Planets can be seen from Earth because they reflect sunlight, making them visible in the night sky. The planets in our solar system are relatively close to Earth, which allows them to be seen without a telescope or binoculars. Their brightness and position change as they move along their orbits around the Sun.
The position of Saturn in the night sky changes throughout the year due to the Earth's orbit around the Sun. As the Earth moves along its orbit, our perspective of Saturn from Earth changes, causing its position in the night sky to shift. This phenomenon is known as the apparent motion of the planets.
Only if you look at it at the same time every night. If you look at it 4 minutes earlier each night, then it doesn't change position at all.
Mars is visible in the night sky because it reflects sunlight, making it appear as a bright object. Its position in orbit around the sun means it can be seen from Earth during certain times of the year, usually when it is at its closest approach to our planet. This makes Mars one of the more easily visible planets in the night sky.
The star's position appears to shift slightly in the night sky during the year.
Yes, the position of the Big Dipper will change over two hours as the Earth rotates. The Big Dipper will appear to move across the night sky due to the Earth's rotation, so its position will shift throughout the night.
The Earth's Orbit, its axis is aligned with Polaris.
Planets are in a slightly different position each night with respect to the stars. The word planet is derived from a word meaning wanderer.
There are generally a couple of planets visible every night of the year. Which planets will be visible and when depends on where each of the planets (and the Earth itself) are in their orbits. Here on August 28, 2009, for example, Jupiter rises about sunset and is brightly visible all night. Venus and Mars rise before dawn. Saturn and Mercury are not visible this month, because they are too close to the Sun to be seen.