Food is important for keeping us alive. Our bodies need nutrients from the foods we eat to keep our bodies working and healthy. And some of those nutrients give our bodies energy to keep working. Those nutrients are called ‘carbohydrates’. But what are they and how do they give us the energy we need?
Black holes are strange things in Space that scientists are still trying to understand. They were first thought of by Albert Einstein, a very famous scientist who did lots of thinking about maths and physics. Einstein’s ideas about how Space and time worked made him think that there might be ‘black holes’ in Space. But black holes weren’t actually discovered to be real until 55 years after Einstein first had the idea of them!
So what are they? Well, black holes are sort of made from old stars. So, we should start by thinking about what stars are made of, then figure out how they can turn into black holes. And then we can figure out why they are called black holes and whether they are actually black!