Formation of Earth :
When the Solar System settled in it’s current layout around 4•5 billion years ago. Earth formed when gravity pulled swirling dust and gas to become third planet from Sun.

Earth Fact File :
Situation : Milky Way Galaxy
Age : 4•5 billion years
Orbital speed (around Sun) : 29•79/sec.
Period of revolution : 365 days 5 hrs
Mass(Weight) : 5,940,000,000,000,000,000,000 Metric tonnes
Axial tilt : 23.45°
Equilateral circumference : 40,066 km
Polar circumference : 39,992 km
Surface area : 510,100,500 sq km
Land surface : 148,950,800 sq km
Water surface : 335,710,000 sq km
Equilateral diameter : 12,756 sq km
Polar diameter : 12,710 sq km
Equilateral radius : 6,376 km
Polar radius : 6,355 km
Distance from Sun : 149,407,000 km
No. of satellites (Natural) : 1 (Moon)
Nearest star : Sun
Solar light reaches Earth : 8 min. 20 sec.