Will Earth Always Be Here?
Just as the Earth wasn't always around, it isn't scheduled to stay around forever, either.
The sun, like other stars, has a finite life span. It will grow up to be a red giant and descend into old age as a white dwarf.
And when the Sun does balloon up and become a red giant, which experts say will likely happen in a few billion years, its super-sized mass will be bloated enough to vaporize our world.
There's a chance, however, that the changing mass of the sun will cause Earth to move into a more distant and pleasant orbit. One mathematical calculation shows it would be theoretically possible for humans—if any are around long enough—to engineer such a move before it's too late.
Life's Little Mysteries: Gift Edition Hardcover Book
Uncover the truth behind more than 100 mysteries that surround us every day with our new hardcover book! Perfect for gifts and classrooms, and suitable for all ages. Some of the included mysteries are:
- Why Do Cats Land on Their Feet?
- How Long Does it Take to Make Petrified Wood?
- What Everyday Things Around Us Are Radioactive?
Find out all of this and much, much more in our NEW hardcover book.
It makes a great gift idea for all ages. more info>>
