A year on Earth isn’t 365 days:
It’s actually 365.2564 days. It’s this extra .2564 days that creates the need for a Leap Year once ever four years. That’s why we tack on an extra day in February every four years – 2004, 2008, 2012, etc. The exceptions to this rule is if the year in question is divisible by 100 (1900, 2100, etc), unless it divisible by 400 (1600, 2000, etc).
The existence of water in the liquid phase on Earth is due to the temperature span that exists on the Earth: 0 – 100 degree Celsius. Water boils at 100 degree Celsius, thus converting it into gas and making it unusable for consumption by living beings including humans, animals, and birds etc…
Earth is Mostly Iron, Oxygen and Silicon:
If you could separate the Earth out into piles of material, you’d get 32.1 % iron, 30.1% oxygen, 15.1% silicon, and 13.9% magnesium. Of course, most of this iron is actually located at the core of the Earth. If you could actually get down and sample the core, it would be 88% iron. And if you sampled the Earth’s crust, you’d find that 47% of it is oxygen.
The Moon reflects Sun’s light on the Earth when the Sun is on the other side of the Earth meaning when there is the night on one side of the planet.
The same side of the moon is always facing the Earth, meaning the moon is in synchronous rotation with the Earth.
Moon is Earth’s only permanent natural satellite. (FYI – there are 181 known natural moons that are orbiting the full-size and dwarf planets in our solar system)
Moon, earth’s natural satellite, is thought to have been formed from Earth after the impact of a Mars-sized object, named Theia.
