What are collinear stars?

Collinear stars are stars that line up straight, just like when you put blocks in a row on the floor.

Imagine you're playing with building blocks. You place one block, then another right next to it, and keep going, all in a straight line. That's what collinear stars look like from far away. They’re not necessarily close together; they could be spread out across space, but if you look at them, they seem to sit on an imaginary straight path.

Think of it like when your friends line up for a class picture. Even though they might be standing in different parts of the room, if they all stand along the same wall or line, they’re collinear, just like stars that seem to follow the same path across the sky.

Sometimes scientists use this idea to understand how far away stars are or how they move, it’s like using a straight line as a clue in a fun puzzle.