A Swing by Earth on the Cosmic Swan

Your astrophysics lack one bit of information: you have not lived the experience of flying in the galaxy. Your theories are based, naturally, on what you see from your observatories, labs, and your probes thru the Solar System.

You must fly with me to Rigel Kantaurus. It's only 4.4 light years from Earth. You will see that nothing prevents my Cosmic Swan to fly there in 7 days. She breathes in space and flies on wings so thin we can see stars through them. Nothing prevents her from accelerating to hundreds of times light speed, but of course you cannot know that because you cannot see us when we travel so fast.

I know what your equations say: they say what you see. But of course, you cannot see anything that escapes its light cone.

The result is that I do not exist in your universe. But you exist in mine.