Solar System:- The solar system comprises of the Sun and its eight planets , their satellites and 5 dwarf planets , which are believed to have been developed from the condensation of gases and other lesser bodies. It also consist of asteroid, meteoroids, comets, electrically charged gases called Plasma, interplanetary dust particles. Components other than these are known as Small Solar System Bodies(SSSB).
Some Important Facts of Solar System
| Biggest Planet | Jupiter |
| Smallest Planet | Mercury |
| Nearest Planet to SunM | Mercury |
| Farthest Planet to Sun | Neptune |
| Nearest Planet to Earth | Venus |
| Brightest Planet | Venus |
| Hottest Planet | Venus |
| Coldest Planet | Neptune |
| Red Planet | Mars |
| Biggest Satellite | Ganymede |
| Smallest Satellite | Deimos |
| Blue Planet | Earth |
| Morning Star | Venus |
| Evening Star | Venus |
| Planet with Red Spot | Jupiter |
| Brightest Planet outside Solar System | Sirius(Dog Star} |
| Closest Star of Solar System | Proxima Centauri |
| Fastest rotation in Solar System | Jupiter |
| Slowest rotation in Solar System | Venus |
| Fastest revolution in Solar System | Mercury |
| Slowest revolution in Siolar System | Neptune |
| Earth's twin | Venus |
| Only Satellite with an atmosphere like Earth | Titan |
| Green Planet | Uranus |
| Densest Planet | Earth |
| Planet with maximum numbers Satellites | Saturn |
Some Important Facts of Solar Family
| Planets | Revolution period
(in Days) |
Rotation period
(in Days) |
No. Of Satellites | Density (Water=1) |
|---|---|---|---|---|
| Mercury | 88 | 58.65 | 0 | 4.80 |
| Venus | 224.7 | 257 | 0 | 4.85 |
| Earth | 365 | 1.00 | 1 | 5.52 |
| Mars | 687 | 1.03 | 2 | 3.95 |
| Jupiter | 4333 | 0.41 | 67 | 1.33 |
| Saturn | 10759 | 0.43 | 62 | 0.69 |
| Uranus | 30686 | 0.45 | 27 | 1.36 |
| Neptune | 60188 | 0.66 | 14 | 1.30 |
Some Important Facts of Sun
| Average distance from Earth | 149598900 km |
| Diametre | 1391980 km |
| Temperature of the core | 15000000 |
| Rotation Speed | 25.38 days(with respect to equator) 33 days (with respect to poles) |
| Chemical composition | Hydrogen: 71%, Helium: 26.5%, Others gases:2.5% |
| Age | 4.6 billion Years |
| Total life | 10 billion Years |
| Time taken by sunlight to reach earth | 8 min. And 16.6 sec. |
| Speed of light(in Vacuume) | 300000 |
Some Important Facts of Moon
| Average distance from Earth | 384365 km |
| Diametre | 3476 km |
| Ratio of diametre of moon to that earth | 1 : 3.7 |
| Rotation Speed | 27 days 7 hrs, 43 min & 11.47 sec |
| Revolution speed | 27 days, 7 hrs, 43 min & 11.47 sec |
| Time taken Moon light to reach earth | 1.3 sec |
| Percent of surface visible from earth | 59% |
| First man to reach moon | Nil Armstrong and Edvin Aldrin on Apollo XI(1969) |
Some Important Facts of Earth
| Age | 4550 million years |
| Mass | 5.976 x 1024 kg |
| Volume | 1.083 x 1024 kg |
| 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 total Surface area |
| Equatorial Diametre | 12755 km |
| Polar Diametre | 12712 km |
| Escape Velocity | 11.2 km/sec |
| Highest Land point | Mount Everest(8848 m) |
| Lowest Land point | Dead Sea(396 m) |
| Greatest ocean Depth | Marina Trench(11033 m) |
| Equatorial Circumference | 40076 km |
| Polar Circumference | 40024 km |
| Mean Surface Temperature | 140° C |
| 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, 5 hrs & 45.51 sec |
| Date when days and 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) |
0 Comments
Please do not make spam link