- We don't know exactly what the Milky Way looks like from the outside.
Yes, you read that right. We only know that it's a spiral galaxy, and we can't send a probe far enough away to capture the entire galaxy. All the images you've seen are just artist's renderings created by observing other spiral galaxies.
Below is a fake image of our Milky Way.
2. The universe is like a giant cosmic web with galaxies in filaments and spaces in between known as voids. The hypothesis is that our galaxy may be in one of these voids, since there aren't many galaxies around us.
Each tiny light in the image is an entire galaxy.
3. All the photos of exoplanets we've seen are also fake. Everything we know about these exoplanets is shown in the images below.
This is the dip in light from the star the exoplanet is orbiting as it passes in front of the star. We observe this through telescopes.
Correction - There are some exoplanets for which direct images have been taken. But they are nothing like the images we see floating around on the internet. One of these fake images is shown below.
Actually, they're more like that.
The red spot is the planet and the white spot in the middle is a brown dwarf star also known as a failed star.
4. The distance between cosmic structures is so great that it is irrelevant to represent them on paper with real proportional calculations, since the structures would be too small to see with the naked eye.
So, all the images we've seen that show all the planets in the solar system in a single image are due to using an incorrect distance. In a real sense, Earth wouldn't even be visible if we were to map the entire solar system onto a sheet of paper while maintaining the correct distance proportions between each planet.
5. The moon revolves around the Earth, the Earth revolves around the sun, and the sun revolves around the center of the Milky Way.
6. Space itself can expand faster than light. This has already been happening.
7. Most of the space inside atoms is empty space. If you imagine an atom as large as a football field, then the nucleus would be about the size of a tennis ball, and the electrons would be on the edge of the field. If you leave no space between the fundamental particles, all of humanity could fit inside a sugar cube.
8. Quantum entanglement is a phenomenon in which effects occur instantaneously over large distances. But we don't know how to use it to transmit information.
9. The space between stars in a galaxy is enormous. It's so vast that when the Milky Way merges with Andromeda in about 4 billion years, there will be almost no collisions between stars, and keep in mind that each galaxy has billions of them.
10. As the Milky Way and Andromeda merge in 4 billion years , our view of the night sky will change. This is what we will see in about 2 billion years.
That's all for now. I'll keep adding more as I come across more information.