Find out why helium balloons float.
- Helium is the second most abundant element in the entire Universe, but is very rare on Earth.
- Helium is incredibly light, so its atoms simply float off into space.
- Helium has the lowest melting and boiling points of all the elements.
Inside the Sun and other stars, hydrogen atoms fuse to form helium atoms.
Named after Helios, Greek God of the Sun
This process, called nuclear fusion, generates an enormous amount of heat and light.
Helium is the second most abundant element in the Universe, making up nearly a ...
Please log in to view and download the complete transcript.