#761 What is a nebula?
What is a nebula? It is an enormous cloud of dust and gas in space. The word nebula is a Latin word, and it means “mist or cloud”. You can…
What is a nebula? It is an enormous cloud of dust and gas in space. The word nebula is a Latin word, and it means “mist or cloud”. You can…
How long did it take for the sun to get hot? Approximately 10 million years for it to start burning. The sun is hot because of nuclear fusion, which is…
Why are we running out of helium? It is a non-renewable resource that we are rapidly using up. Many people don’t give a second thought about helium. It is the…
I learned this today. A superfluid is a point where matter behaves like a fluid but has zero viscosity.A superfluid has no viscosity. That means it doesn’t have any friction…
I learned this today. Our voices change when we inhale helium because sound travels through it faster than it does through air. There are two things we need to look…
I learned this today. Cold fusion is not possible because atoms repel each other and thermo energy on the scale of millions of degrees is necessary to overcome this repelling…
I learned this today. Stars die because they exhaust all of their fuel. There are seven different types of star. They are classified using the Morgan-Keenan system. They are given…