2.Should it have no nucleus, the Earth would be subjected to deadly space rays and life would be impossible.
3.Any spaceship penetrating our atmosphere at angle bigger than 5.8 degrees, would most probably burn.
4.Worldwide, less than 50 people actively look for asteroids.
5.Asteroid oddly means in Greek “similar to a star”.
6.Astronomers don’t use the term “light year”.
7.We have more detailed maps of the Moon and Mars compared to the bottom of the oceans.
8.The astronomer William Henry Pickering thought that black spots on the Moon were migrating insects.
9.Frontiers of the Solar System are not anywhere near the most distant planets. Going to the dwarf planet Pluto covers roughly 1/1,000th of the distance.
10.There is liquid water on Mars.
11.In space, astronauts cannot cry, as the tears need gravity to flow.
12.The crash of the inter-planetary probe Mariner 1 cost 80 million dollars. It was due to a forgotten overbar (a horizontal line written above a mathematical symbol) over the letter R in one of the formulas that went unnoticed and screwed the orbit calculations.
13.Theoretically, to circumnavigate the largest known star in a jet travelling at 900 km/h (560 mph), you will need more than 1,000 years.
14.Up to 50% of the water on Earth was brought by comets.
15.After the Fukushima earthquake, Japan moved aside 2.5 meters (8 ft.) and the Earth tilted by 18 cm (7 inches).
16.Astronauts use diapers during take-off and landing and while on space walks.
17.Astronauts lose their sense of smell in space.
18.There are ice volcanoes on Triton (Neptune’s largest moon).