Can humans fit in sugar cubes?

Almost all of ordinary matter (99.9999999\% of it) is empty space. If you took out all of the space in our atoms, the entire human race (all 7 billion of us) would fit into the volume of a sugar cube.

What happens if you remove all the atoms from an apple?

The rest of the atom is entirely empty apart from a few ghostly objects called electrons that skim about at a great distance from the nucleus. If you removed all the empty space from the atoms that make up all the humans on the planet, then you could fit all 6 billion of us inside a single apple.

What percent of the galaxy is empty space?

Voids, vast expanses of nearly empty space, account for about 80 percent of the observable universe. The other stuff, like dust and stars and galaxies like the Milky Way, exists in thread-like filaments between these voids. As the universe expanded, gravity drew matter into clumps, leaving behind cavernous spheres.

What percentage of space is dark matter?

Dark matter seems to outweigh visible matter roughly six to one, making up about 27\% of the universe. Here’s a sobering fact: The matter we know and that makes up all stars and galaxies only accounts for 5\% of the content of the universe!

Do we have pictures of atoms?

Atoms are so small that it’s almost impossible to see them without microscopes. But now, an award-winning photo shows a single atom in an electric field—and you can see it with your naked eye if you really look hard. This is a strontium atom, which has 38 protons.

How many galaxies are there in the universe?

Galaxies come in many sizes. The Milky Way is big, but some galaxies, like our Andromeda Galaxy neighbor, are much larger. The universe is all of the galaxies – billions of them!

Is the Milky Way the largest galaxy in the universe?

The Milky Way is big, but some galaxies, like our Andromeda Galaxy neighbor, are much larger. The universe is all of the galaxies – billions of them!

Why do galaxies stay the same size in space?

But the objects embedded in space, like planets, stars, and galaxies stay exactly the same size. As space expands, it carries galaxies away from each other. From our perspective, we see galaxies moving away in every direction.

How far do galaxies spread out?

If you imagine a grid of space with a galaxy every million light years or so, after enough time passes this grid will stretch out so that the galaxies are spread to every two million light years, and so on, possibly into infinity. Carl Sagan with the planets. Castaneda, Eduardo (Photographer). 1981. Manuscript Division, Library of Congress.