Parallax

Hello there! Let me explain to you what parallax is. Do you know how when you look at something from one eye and then look at it from the other, the object appears to be in a slightly different position? That is what parallax means - it's the difference in the position of an object when viewed from different points.

Let's imagine you are holding a pencil in front of you. If you close one eye and look at the pencil, you see it in a particular way, and if you close that eye and open the other one, you might see the pencil in a slightly different way. Even though the pencil isn't moving, it appears to be in different positions when seen from different angles. That's parallax!

Now, let's think about how this applies in other parts of the world. Astronomers use parallax to measure the distance between stars or planets. If you imagine two astronomers on either side of the Earth looking at the same star, it's like they're looking at the star from two different angles. By measuring the difference in the angles at which they see the star, astronomers can calculate the distance to the star.

Think about it like this: If you held up the pencil close to your face, it would look bigger than when you hold it further away. And if you asked your friend to look at the pencil, it would appear smaller because your friend is further away. It's like that with stars, just on a much bigger scale.

So that's parallax. It's a way of measuring distances by looking at objects from different angles. It's a bit like when we close one eye and then the other to see the world in a different way.