EARTH

Age - 4,550 million years

Mass - 5.976 x 10kg

Volume - 1.083 x 10 litres

Mean Density - 5.518 kg/lt

Total Surface Area - 510 million sq.km

Land Area - 29.2% of the total surface area

Water Area - 70.8% of the total surface area

Equatorial Diameter - 12,755 km

Polar Diameter - 12,712 km

Escape Velocity - 11.2 km/sec

Highest Land Point - Mount Everest (8,852 m)

Lowest Land Point - Dead Sea (396 m)

Greatest Ocean Depth - Mariana Trench (11,033 m)

Equatorial Circumference - 40,076 km

Polar Circumference - 40,024 km

Mean Surface Temperature - 14C

Maximum distance from sun (Aphelion) - About 152 million km

Minimum distance from sun (Perihelion) - About 147 million km

Rotation Speed - 23 hrs, 56 min & 40.91 sec

Revolution Speed - 365 days, 5hrs & 45.51 sec

Dates when days & nights are equal -Mar,21 (Vernal Equinox); Sept. 23 (Autumnal Equinox)

Dates of longest days and shortest nights - June 21 (Summer Solstice); Dec, 22 (Winter Solstice)