What are the most fascinating science facts?

The blood would appear green in color in deep sea/ocean. Water can boil and freeze at the same time. If you took out all the empty space in our atoms, the human race could fit in the volume of a sugar cube . Lasers can get trapped in a waterfall. A teaspoonful of neutron star would weigh 6 billion tons . The Eiffel Tower can be 15 cm taller during the summer. Babies have around 100 more bones than adults. An egg looks like a crazy jellyfish underwater. A flea can accelerate faster than the Space Shuttle. A single solar flare can release the equivalent energy of millions of 100 megaton atomic bombs . Cats always land on their feet . If you spin a ball as you drop it , it flies .