General knowledge of Sun and Earth by General knowledge Solutions

General knowledge of Sun and Earth  by General knowledge Solutions

SUN:
Age : About 5 Billion years
Distance : 149.8 Million Kms
Diameter : 1,38,400 Kms.
Photosphere temperature : 5,770 K
Core temperature : 150,000,000 K
Absolute visual magnitude : 4.75
Rotation (as seen from the
earth at the equator) : 25.38 days
Rotation (near the poles) : 33 days
The sun consists of 71% of Hydrogen, 26.5% Helium and
2.5% of other elements.
The rays of the Sun take about 8 minutes to reach the
earth.





 EARTH:
Surface Area : 510,100,500 Sq.Kms.
Land Surface : 148,950,800 Sq.Kms.
(29.08%)
Water Surface : 361,149,700 Sq.Kms.
(70.92%)
Equatorial circumference : 40,075 Kms.
Polar circumference : 40,008 Kms
Equatorial radius : 6,377 Kms.
Equatorial Diameter : 1,22,756 Kms.
Polar radius : 6,357 Kms.
Polar Diameter : 12,714 Kms.
Mean distance from the
Sun : 14,95,97,900 Kms.
Period of revolution : 365 days 5 hours 48 mts.
45.51 Sec.
Period of rotation : 23 hrs. 56 mts. 4.091 Sec.
Escape Velocity from
the earth : 11 Km per Sec. (minimum)