A quarter of the universe’s mass is made from helium. It’s forged in stars from hydrogen. There’s plenty in our solar Sun.
Its gas is light but won’t explode. As liquid, it’s extremely cold. We need it for experiments, MRIs and asthma meds.
Our atmosphere has almost none. Earth’s gravity can’t hold it in. Balloons that float-up might be fun but waste our precious helium.
Find out more at:
https://blogs.unimelb.edu.au/sciencecommunication/2012/09/25/the-ethics-of-balloons/
Australian Children’s Poetry 