helium
Who Discovered Helium?
In addition to its many commercial and scientific uses, helium is one of the most plentiful elements in our universe,…
What is the Life Cycle Of The Sun?
Like all stars, our Sun has a life-cycle that began with its birth (4.57 billion years ago) and will end…
Why Do Red Dwarfs Live So Long?
While our Sun will only survive for about 5 billion more years, smaller, cooler red dwarfs can last for trillions…
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Sweet Sights for November Nights
Clear night ahead? Let's see what's up. We'll start close to home with the Moon, zoom out to lonely Fomalhaut 25 light…
Why Do Red Giants Expand?
We know that the Sun will last another 5 billion years and then expand us a red giant. What will…
Can You Kill a Star With Iron?
Since the energy required to fuse iron is more than the energy that you get from doing it, could you…
How Quickly Does a Supernova Happen?
When a massive star reaches the end of its life, it can explode as a supernova. How quickly does this…
What Is A Wolf-Rayet Star?
Wolf-Rayet stars represent a final burst of activity before a huge star begins to die. These stars, which are at…
How Much Water Would Extinguish the Sun?
Have you ever wondered how much water it would take to put out the Sun? It turns out, the Sun…
What’s Inside Jupiter?
Jupiter is like a jawbreaker. Dig down beneath the swirling clouds and you'll pass through layer after layer of exotic…