Why do we see different stars at different times of the year ?

Answer 1

I'm only answering because there are a few points above, which need to be clarified or disputed.

First of all, the earth's tilt has nothing to do with what stars we see at different times of the year. All the stars follow virtually the same tracks across the sky every day, all year long. What matters is our position in our orbit around the sun. And what changes as a result of the polar tilt is north-south the position of the sun as *it* tracks across the sky. This is also why the amount of light and dark we have, changes during the year, but the length of a day, (24 hour solar day), never changes. In winter, in the northern hemisphere, we have longer *nights*, not days.

As the earth orbits around the sun, we see it moving from west to east a little bit every day, along a path called the ecliptic. During the course of a year, it "moves" through an entire 360 degree circle in the sky. So when we are on one side of the sun, we see one side of the sky at night. Six months later, when we are on the other side of the sun, we see the other half of the sky at night.

Answer 2

The position of the stars relative to the earth doesn't change much over a year, but in winter the days are longer so we can see more. If the sun wasn't visible you'd be able to see the same stars all year, they would just move above and below the horizon as the earth rotates. In summer you don't see some stars because they are only above the horizon at the same time as the sun.

Answer 3

We can't see stars in the direction of the sun, which we consider daylight. We can see stars when the bulk of the earth hides the sun, which we call night. But during the year, as we go around the sun, different stars are on the line from the sun, through the earth and out into the night sky, we see different ones.

Answer 4

because the earth is revolving around the sun so the sun blocks the stars and also the earth is rotating too.also a star is a certain number of light years away.so after that number of years the light from the star reaches our eyes thus the star will be visible to us.and stars also get destroyed so the same,the it takes that much years for the light to reach our eyes

Answer 5

Because at different times of the year, the Earth's night side faces different directions.

Answer 6

Simply put:
Because the night side of the earth points in
different directions at different time of the year.

Answer 7

It is because of the revolution of the earth around the sun.As the earth revolves, we are moving continuously in space looking at the sky in different angles.So,stars located in different angles in the space are seen from the moving earth.

Answer 8

Because the Earth is moving around the Sun, in a cycle called "year".

Answer 9

Because of the tilt of the Earth's axis of rotation as it flies around the Sun in its 365 day orbit.

Answer 10

Because the earth tilts back on its axis and we can not see the things in winter that we do in summer, as the earth tilts back it exposes other patrs of the universe than it does when its tilted forward