sun
Who Discovered Helium?
In addition to its many commercial and scientific uses, helium is one of the most plentiful elements in our universe,…
We Have Underestimated Our Sun’s Destructive Reach
The Sun causes the destruction of asteroids at a much greater distance than previously thought.
Solar Analemma 2015: A Year-Long Picture
If you took a picture of the Sun every day, always at the same hour and from the same location,…
What Is The Heliocentric Model Of The Universe?
In 1543, Polish astronomer Nicolaus Copernicus revolutionized astronomy by proposing his heliocentric model of the 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…
How Does The Sun Produce Energy?
Have you ever wondered how the Sun produces energy to keep us warm here on Earth?
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…
Why Aren’t There Eclipses Every Month?
If the Sun, Earth and Moon are lined up, shouldn't we get a lunar and solar eclipse every month? Clearly,…
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…