1. The Great Wall Of China
The Great Wall Of China makes it really weird as it is not visible from space, To be clearer it is really hard to see it from low Earth orbit, But the most strange part is people started to believe that it is totally invisible and started to search for an explanation to this theoretically, But NASA stopped it all by giving a photo of The Great Wall from its station, providing that it is totally hard to see The Great Wall Of China from the space but it is easier to see The Great Pyramids Of Giza from the space providing us with a picture of the appearing Great Pyramids of Giza from a space station, So now if i say that The Great Wall Of China is invisible it is totally a myth, But i can say it is hard to see The Great Wall from the space.
2. Metal Welding In Space!
As we all know that the space is just vacuum, So if we stick two different metal parts together they will stick together, This is called Cold Metal Welding! This phenomenon was discovered in the 1940s. But the two surface must be clean and from the same metal, Let's weld our materials in space who is joining?!
It's a Latin word which means 'cloud', This beautiful Nebula is obliviously a cloud consisting mainly of dust, hydrogen, helium and ionized gases. They really look like clouds, It is believed that the reason of the formation of this awesome, charming and beautiful Nebula is the creation of a new star or the death of another star.
4. Stick Your Footprint On The Moon, Why Are You Waiting?
The Apollo Astronauts footprints will mostly remain for hundred million years as there is no water or wind on the moon , We should not have missed that Apollo trip!
5. The Solar System
The Solar System is around 4,500 million years old, Scientists believe that it will last for another 5,000 million years! That's really soon Get Ready!