Something flying at 87% of the speed of light would shrink to half its length as measured by a stationary observer

Because the Moon takes the same amount of time to rotate on its axis as it does to orbit the Earth, future colonizers on the lunar surface would see the Earth as mostly stationary in the sky, while the Sun and stars move around it

One of the consequences of quantum entanglement is that an entangled particle has properties that are not entirely located in that particle; rather, they are part of a shared quantum state

The main known astronomical bodies of our Solar system are: 1 star, 8 planets, 5 dwarf planets, and 293 known moons, but most likely there are more to be discovered

No human activity but science has led to discoveries about the nature of reality that were not there to be seen in the first place

According to the Bekenstein-Hawking holographic principle, the amount of information that can be placed in a region of space is proportional to the area of the surface surrounding that space, and not its volume

A galactic year is the time it takes our Solar system to complete one orbit around the centre of the galaxy, which is 250 million years, therefore Earth is just 18 galactic years old

The Apollo missions number 11, 12, 14, 15, 16, and 17 brought back to Earth 20.7, 34.1, 42.8, 76.6, 96.7, and 15.0 kg of soil samples respectively

A black hole represents the maximum possible entropy that can be contained within a given region of space

Quantum superposition is a fundamental principle in quantum mechanics where a particle, such as an electron or photon, can exist in multiple states or locations simultaneously until it is measured or observed