Sound as we know it does not exist in space. That’s because, on Earth, sound mainly travels to our ears via vibrating air molecules. Because space is a vacuum, meaning there is no matter at all ...

How is the International Space Station able to orbit without burning up? – Mateo, age 8, New York, New York ...

Whether you're looking for a fun lunar play set for kids or a realistic NASA model, you'll find it in our round-up of the best Lego space sets. From realistic scale models of NASA rockets to lunar ...