Something that is truly incomprehensible are the voids that occupies the space between the visible matter in the universe. Some voids appropriately called “Super Voids” can be millions of light-yeas across.
For example; The ‘Boötes Void’ — It’s 250 million light years of almost NOTHINGNESS.
Photo; Wikipedia
From this image it might not look that bad until you realize that almost all of the galaxies shown in the circle lie in front or behind it to date only 60 galaxies has been found within this void. A space that large could easily contain 10,000 galaxies when compared to other regions.
Just imagine if an alien civilization like our own exists on a planet within one of these galaxies the nearest neighbor would be tens of millions of light years away.. Even worse, if your planet is orbiting an intergalactic star, it’s a star or star system that has been ejected from its home galaxy and is now floating freely through the cosmos.
Photo; Wikipedia
2.
Magnetars is a form of extremely magnetic neutron stars from around 400 kilometers, the magnetic field would strip you of all metallic objects such as your phone, watch, belt, and so on.
And if you got really close it would eventually start ripping out the iron in your red blood cells out of your body.
3. There’s a weird correlation between the distance and size of the Sun and our Moon because during a solar eclipse..
the moon almost prefectly covers the Sun but there’s really no physical reason why this has to be the case. The moon just happens to be 400 times smaller than the Sun, but the Sun just happens to be 400 times further from the earth than the moon…
Another object we can see with the naked eye is the Andromeda galaxy, and it looks like a little something like this
Photo; Lemmino / Youtube
But because Andromeda is so far away, we only see the very bright center of it. If we could see all of Andromeda our skies could look like this, every night;
It would be several times larger than the moon even though it’s 2.5 million light years away.