Ice

At earth's atmospheric pressure 

Hydrogen freezes solid at -259.16 °c.

Oxygen freezes solid at -218.79 °c.

Nitrogen freezes solid at -210 °c 

Carbon Dioxide freezes solid at  -78.5 °c  

Helium won't freeze at any temperature in Earth's atmospheric pressure except absolute zero which is impossible. 

If you made a bowl out of frozen carbon dioxide, Helium, Hydrogen, Oxygen, and Nitrogen ice would boil in it. 

Oxygen ice is magnetic as is liquid oxygen. 

Your Ancestors

You came from 

2 parents,

4 Grand parents 

8 Great Grand parents 

16 Great Great Grand Parents 

32 Great Great Great Grand parents 

64 Great Great Great Great Grand parents 

This means you have 126 ancestors in 6 generations of your family. They are all likely to be very unique and different people. 

Night and Day

Night is the shadow of the Earth so when the Sun sets on the Horizon  you are seeing the Earth's shadow move towards you. 

The Earth isn't obiting the Sun, it is orbiting the solar system's center mass, most of the solar system's mass in in the Sun so we appear to be orbiting the sun but in reality the Sun and the planets are orbiting a point that is close to the Sun's surface. If you were looking at the sun from another star, it would appear to wobble because it is orbiting a point that is sometimes below it's surface and other times it is above the surface depending on where Jupiter is.