On a daily basis, the rotation of the Earth.
On a seasonal basis, the motion of the Earth around the sun.
Over the long term ... they're all independently moving around the center of the galaxy.
The rotation of the Earth causes the observer to move, rather than the constellation. ghjknK>jsbilfufbSE
The rotation of the earth. It is the exact same process that causes the position of the sun to appear to change of the period of several hours.
The constellations seem as though they change position because the Earth rotates and orbits so, relative to the Earth, they are in a different position depending on the time of year.
they are not earth is rotating
star
The motions of the earth in its orbit of the Sun are kind of like a wobbling spinning top. This causes the Sun's noon position to appear to change over the seasons.
Earth in its orbit.
light on the sun
A constellation is caused by two things, the first of which is the arrangement of the stars (or planets) themselves in the sky when viewed from a particular perspective. Perspective is the second cause, that is, the human ability to see the arrangement of stars, then to see similarities with other objects in comparison to that arrangement.
The Earth's rotation. The relation between the Earth (or a person on the Earth) and the position of the stars makes it appear that the stars are in a different position as the night progresses.
star
The motions of the earth in its orbit of the Sun are kind of like a wobbling spinning top. This causes the Sun's noon position to appear to change over the seasons.
Its position in relation to the Earth and the Sun.
The rotation of the earth is what causes the sun to appear to set
Fluorescein stain causes the cornea to appear green with lit with a Woods lamp.
The revolution of Earth around the sun.
light refracting
the position of the sun
Earth in its orbit.
Acid Rain causes holes in appear in marble steps and statues. Hard to believe, but true, yes.
water bends in light because of refraction which causes fish to seem a little off than where they appear to be. Because of this fisherman need to know where to position their hooks when they can see fish