Dark Matter: The Universe's Invisible Helper

There's a mystery in space called dark matter. It's like an invisible glue that helps galaxies stick together. We can't see it with our eyes or even with telescopes because it doesn't shine or reflect light.

Scientists know it's there because of how it pulls on things with its gravity, like an invisible hand. It's a super important part of the whole universe, even though it's shy and hides from us!

Scientists started noticing something strange a long time ago. They saw that stars in galaxies were spinning much faster than they should. It was like a merry-go-round spinning so fast that the people on the edge should fly off, but they didn't!

This meant there had to be more stuff, more gravity, holding them in place. This 'extra stuff' is what we now call dark matter. It's been a puzzle for many years!

Dark matter is like the scaffolding that holds up the giant structures in space, like galaxies and clusters of galaxies. Without it, the universe would look very different, and galaxies might not have formed at all! It's also a big part of what the universe is made of.

Think of it like this: if the universe was a giant cake, dark matter would be most of the cake, while the stars and planets we see are just the sprinkles on top!

After the Big Bang, the universe was like a big soup. Dark matter started to clump together, forming invisible threads. Then, galaxies, like tiny beads, formed along these threads, creating a giant 'cosmic web.' This web is spread all across the universe, and dark matter is the invisible structure that holds it all together. It's like the framework for the biggest spiderweb you can imagine!