The light of the noble gasses, at. no. 2, used as a lifting agent for zeppelins and balloons. If you inhale it, your voice will sound really funny like you're pinching your nose. Just don't asphyxiate yourself, or you'll be sorry.
When he let go of his balloon, it floated up into the air because of the helium inside it.
Helia is a female name derived from the Greek name "Helios", the god of sun in greek mythology. It is said that Helios had a number of children and one of his daughters was named Helia. Also in some cultures Helia is defined as peach blossom.
-"What's your name?"
-"Wow what a beautiful name, you must be the goddess of sun!"