2:19Are matter and energy interchangeable?Albert Einstein discovered that matter and energy are essentially the same. His famous equation, E=mc2, explains how the sun transforms mass into energy.
2:31How did the Ingenuity helicopter fly on Mars?A small Mars-copter confirmed that flight on other planets is possible. But before it could be deployed, Ingenuity had to travel around 480 million kilometers just to reach its mission site.
2:55Do atoms have ages?Everything is made of atoms. Including us! These fundamental building blocks of matter formed at different times. Hydrogen first appeared around 14 billion years ago, heavier elements came later. This viewer question comes from Mouniya S. in Algeria.