EXPLORATION OF THE EARTH

Int.


Astronomical specifications:

Orbital characteristics:
Distance from Sun 149,597,890 km
Perihelion 147.1 x (106 km)
Aphelion 152.1 x (106 km)
Orbital Inclination 0.0 deg
Orbital Eccentricity 0.0167
Orbital periode round Sun 365.2 days
Orbital Speed 29.78 km/s
Number of moons 1
Rings No
Physical characteristics:
Diameter 12,756 km
Surface area 510,000,000 km
Volume 1.083 x 1012 km
Mass 5.9742 x 1024kg
Density 5515 kg/cm
Equatorial gravity 9.81 m/s
Escape velocity 11.18 km/s
Rotation period 23.9 hours
Axial tilt 23.44 deg
Surface temperature 15 C (287 K)
Surface Pressure 1 bars
Atmospheric composition N2 O2

The Earth seen from Apollo 17


Early history:

Space race:

Earth exploration missions:

Name Launch
Date
Launch rocket Weight
(kg)
Mission
- - - - -


Ref.: #27 - update: 08.03.11 Home