epic science facts

All of the atoms in your body are constantly being renewed and the ones you were born with are no longer a part of you. Your atoms are probably spread all around the planet right now, especially the ones you have breathed in or out.
You have most likely breathed an oxygen atom that Einstein (or any other person really) breathed while writing his famous equation.  Of course those atoms would have to still be on Earth for that, so if they all got struck by cosmic rays and were blasted off into space, then you are out of luck. But hey if that is the case, then you are breathing a proton sent from across the galaxy!
Though in a way, all of the atoms here were sent from across the universe, considering every element outside of Hydrogen was birthed in the core of a star at some point. Then those stars had to explode to spread their atoms elsewhere, which eventually came together in a momentary flow to create you.

Y’ALL ARE SAYING IRIS IS USELESS AND CAN’T CONTRIBUTE TO THE TEAM AT ALL - IRIS IS BASICALLY SHERLOCK HOLMES HERE WITH HER AMAZING INVESTIGATIVE RESEARCH SKILLS FINDING KEY BITS OF INFORMATION OUT AND WHATNOT

That is right, we are on a collision course with our neighbor, the Andromeda galaxy.

We are hurtling towards each other at 250,000mph, though considering the size of each galaxy and the distance between them that is basically a stand-still. In about 4 billion years however you can expect the sky to be very different as the Andromeda galaxy gets closer and eventually collides with the Milky Way. The Earth (and almost every solar system) will be fine, because there is just so much interstellar space for everything to pass right by. The interstellar gas will collide however and start new star formation, this will be noticeable in the sky as all of the new giant-balls-of-hydrogen (i.e. stars) begin to ignite. Eventually, the cores of each galaxy will merge and dominate the night sky.
See the entire process here via Science at NASA

You can see your own DNA with a few simple steps. You can watch this video to let Brian Cox explain it to you, but it might get taken down from Youtube again so I’ll explain it here.

First you need to get some of your cells, a good spot is from the inside of your mouth because your cheeks slough off a good amount of cells frequently. Now break off some of those cells by swirling your tongue around and then spit into a tube or beaker. Next, add the liquid soap to break open the cells and get the DNA out. Then add a little salt to encourage molecules and proteins to clump together. Now, add the alcohol, pour it down the side and you will start to see the DNA precipitating out of the solution because it is insoluble in alcohol. It will appear as little white strands. That’s your DNA! All the information needed to make you!

Both libration and the size differences are caused by the Moons elliptical orbit.

The moon seems to wobble because as it reaches the wider part of its orbit, it slows down and its rotation gets out of sync with its orbit around Earth. That is what allows us to see 59% of the Moon over the course of a month and also what causes the Moon to seem smaller/bigger at different times. If you don’t want to wait around for a month to try and see it wobble, you can check out this gif and see it for yourself.