Question

as the earth revolves around the sun, a stars position seems to change. do stars move? stars move, but because they are so far away and move so slowly, we cannot see their movement easily. every night stars seem to rise and set, but it is not the stars that are moving. it is the earth. the rotation of earth causes daytime and nighttime. because of earths rotation, the sun moves across the sky during the daytime. for this same reason, the stars seem to move across the sky at night. all of the stars that you see appear to rotate around polaris, the north star. the stars seem to make a full circle around polaris every 24 hours. earths tilt and revolution cause the seasons. during each season, any point on earth faces a different part of the sky at night. that means that different stars appear in the night sky at different times of the year. in addition to their apparent motion, stars are moving through space. because the stars are so far away, it is difficult for us to see their motions. over thousands of years, however, the movements of the stars can cause the shapes of constellations to change. take a look 13. explain what causes parallax? take a look 14. compare circle one star, other than polaris, in the picture on the left. then circle the same star in the picture on the right. draw a curved arrow in the first picture that shows the direction that the star seemed to move.

Explanation:

Parallax is caused by the Earth's revolution around the Sun. As the Earth moves from one position in its orbit (e.g., January) to another (e.g., July), the apparent position of a nearer star relative to very distant stars changes. This change in apparent position is parallax.

Answer:

The Earth's revolution around the Sun causes parallax.