Gravity is the reason things with mass or energy are attracted to each other. It is why apples fall toward the ground and planets orbit stars. Magnets attract some types of metals, but they can also ...

Monica Grady receives funding from the STFC, UK Space Agency and the EU. She is a Research Fellow at the Natural History Museum. She is director of her company MGML(UK) Ltd which provides educational ...

Mario Borunda does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...