Cram Session: Parallel Universes in 200 Words
In this series, Life's Little Mysteries explains complex subjects in exactly 200 words.
Astrophysical data suggests space-time might be "flat," rather than curved, and thus that it goes on forever. If so, then the region we can see (which we call "the universe") is just one patch in an infinitely large "quilted multiverse." Meanwhile, the laws of quantum mechanics dictate that there are only a finite number of possible particle configurations within each cosmic patch (10^10^122 distinct possibilities, to be exact). So, with an infinite number of cosmic patches, the particle arrangements within them must repeat — infinitely many times over. This means there are infinitely many "parallel universes": cosmic patches exactly the same as ours (containing someone exactly like you), as well as patches that differ by just one particle's position, patches that differ by two particles' positions, and so on down to patches that are totally different from ours. Furthermore, proponents of inflationary cosmology believe our quilted multiverse is just one of infinitely many bubbles that have inflated inside a larger multiverse. Because the fundamental constants can vary from bubble to bubble, each bubble can be wildly different; however, the possible values of the constants are finite, so the bubbles must eventually repeat. Thus, there are parallel universes within parallel quilted multiverses.
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>>