ഭൂമി
വിക്കിപീഡിയ, ഒരു സ്വതന്ത്ര വിജ്ഞാനകോശം.
 Famous "Blue Marble" photograph of Earth, taken from Apollo 17. |
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| Orbital characteristics | ||||||||||
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| Epoch J2000 | ||||||||||
| Aphelion distance: | 152,097,701 km (1.016 710 333 5 AU) 94,509,130 mi |
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| Perihelion distance: | 147,098,074 km (0.983 289 891 2 AU) 91,402,725 mi |
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| Semi-major axis: | 149,597,887.5 km (1.000 000 112 4 AU) 92,956,041 mi |
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| Semi-minor axis: | 149,576,999.826 km (0.999 860 486 9 AU) 92,943,062 mi |
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| Orbital circumference: | 924,375,700 km (6.179 069 900 7 AU) |
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| Orbital area: | 7.029 754 4 × 1016 km² (3.141 154 4 AU2) | |||||||||
| Eccentricity: | 0.016 710 219 | |||||||||
| Sidereal period: | 365.256 366 days (1.000 017 5 yr) |
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| Avg. orbital speed: | 29.783 km/s (107,218 km/h) |
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| Max. orbital speed: | 30.287 km/s (109,033 km/h) |
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| Min. orbital speed: | 29.291 km/s (105,448 km/h) |
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| Inclination: | Reference (0) (7.25° to Sun's equator) |
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| Longitude of ascending node: | 348.739 36° | |||||||||
| Argument of perihelion: | 114.207 83° | |||||||||
| Satellites: | 1 (the Moon) | |||||||||
| Physical characteristics | ||||||||||
| Ellipticity: | 0.003 352 9 | |||||||||
| Mean radius: | 6,372.797 km | |||||||||
| Equatorial radius: | 6,378.137 km | |||||||||
| Polar radius: | 6,356.752 km | |||||||||
| Aspect Ratio: | 0.996 647 1 | |||||||||
| Equatorial circumference: | 40,075.02 km | |||||||||
| Meridional circumference: | 40,007.86 km | |||||||||
| Mean circumference: | 40,041.47 km | |||||||||
| Surface area: | 510,065,600 km² | |||||||||
| Land area: | 148,939,100 km² (29.2 %) | |||||||||
| Water area: | 361,126,400 km² (70.8 %) | |||||||||
| Volume: | 1.083 207 3×1012 km³ | |||||||||
| Mass: | 5.9736×1024 kg | |||||||||
| Mean density: | 5,515.3 kg/m³ | |||||||||
| Equatorial surface gravity: | 9.78033 1 m/s² (0.997 32 g) |
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| Escape velocity: | 11.186 km/s (40,270 km/h) 6.95 mi/s (25,022.34 mph) |
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| Sidereal rotation period: | 0.997 258 d (23h 56m 04.09054s) |
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| Rotation velocity at equator: | 465.11 m/s | |||||||||
| Axial tilt: | 23.439 281° | |||||||||
| Albedo: | 0.367 | |||||||||
| Surface temp.: Kelvin Celsius |
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| Adjectives: | Terrestrial, Terran, Telluric, Tellurian, Earthly | |||||||||
| Atmosphere | ||||||||||
| Surface pressure: | 101.3 kPa (MSL) | |||||||||
| Composition: | 78.08% N2 20.95% O2 0.93% Argon 0.038% Carbon dioxide Trace water vapor (varies with climate) |
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ഭൂമി സൗരയൂഥത്തിലെ ഒരു ഗ്രഹമാണ്. പ്രപഞ്ചത്തില്‍ ജീവജാലങ്ങള്‍ക്കു നിലനില്‍ക്കുവാനുള്ള സാഹചര്യം ഉള്ളതായി അറിയപ്പെടുന്നത് ഭൂമിയില്‍ മാത്രമാണ്‌. സൂര്യനില്‍ നിന്നുള്ള അകലം വച്ചു നോക്കുമ്പോള്‍ മൂന്നാമതാണ് ഭൂമി, വലിപ്പത്തിന്റെ കാര്യത്തില്‍ അഞ്ചാമതും. ഭൂമിയുടെ പ്രായം എകദേശം 4.55 ബില്യണ്‍ വര്‍ഷമാണെന്നാണ്‌ കണക്കാക്കപ്പെട്ടിരിക്കുന്നത്‌.[1]
.gif/150px-Rotating_earth_(large).gif)
[തിരുത്തുക] അവലംബം
[തിരുത്തുക] പുറത്തേക്കുള്ള കണ്ണികള്‍
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- Planet Earth From AOL Research & Learn: Photos, quizzes and info about Earth's climate, creatures and science.
- Earth From Space Some Photos From the Exhibit
| സൗരയൂഥം |
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| നക്ഷത്രം: സൂര്യന്‍ |
| ഗ്രഹങ്ങള്‍: ബുധന്‍ - ശുക്രന്‍ - ഭൂമി - ചൊവ്വ - വ്യാഴം - ശനി - യുറാനസ് - നെപ്റ്റ്യൂണ്‍ |
| കുള്ളന്‍ ഗ്രഹങ്ങള്‍: സെറെസ് - പ്ലൂട്ടോ - ഈറിസ്‌ |
| മറ്റുള്ളവ: ചന്ദ്രന്‍ - ധൂമകേതുക്കള്‍ - കൈപ്പര്‍ ബെല്‍റ്റ് |
Earth's location in space
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| Earth | History of Earth | Earth science | Structure of the Earth | Plate tectonics | Geology |
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| Life | Biosphere | Origin of life | Microbe | Plants | Botany | Fauna | Animals | Biology |
| Environment | Wilderness | Ecology | Ecosystem |
| Universe | Matter | Energy | Extraterrestrial life | Outer space |
