Update

earth.md

@@ -48,6 +48,7 @@ Some numbers about the planet Earth:
 - mass: 5.9 * 10^24 kg
 - acceleration by gravity: 9.8 m/s^2
 - axial tilt: 23.4 degrees
+- length of day: 24 hours
 - length of year: 365.25 days
 - land vs water area: 148940000 km^2, 361132000 km^2
 
@@ -66,6 +67,11 @@ Some numbers about the planet Earth:
 
 *Earth from space*
 
+Earth is the third planet from the [Sun](sun.md) and the fifth largest in the Solar System, it has an ellipsoid shape. It has formed from space dust nearly 5 billion years ago during the formation of our Solar System. Soon after its formation it was struck by a Mars-sized body, called Theia, which led to the formation of the [Moon](moon.md), Earth's only natural satellite. It's only by [curious](interesting.md) happenstance that the Moon is currently of the same size in the sky as the Sun, allowing perfect eclipses -- nonetheless the Moon is constantly getting further away from us and will be getting visually smaller. Earth has a hot core, an atmosphere and a magnetic field, its surface is mostly (71%) covered by water. Evidence suggests that [life](life.md) appeared on Earth some 3 and a half billion years ago. Scientists predict that the Earth will be devoured by the Sun that will expand its radius significantly some 7 and a half billion years from now.
+
+LOL IM slightly drunk a little bit
+
 ## See Also
 
-- [Universe](universe.md)
+- [Universe](universe.md)
+- [history](history.md)