Solar System- Mercury,Venus
In our solar system comprises Sun and other eight planets and their moon like earth have one moon and other planets also have their moons and other no stellar objects
Solar system |
let discuss first what is the no stellar object
NON STELLAR OBJECT- It is natural object which is found outside of earth"s atmosphere
non stellar object look like a star but they are not star.
non stellar object
these astronomical bodies are uncountable in our space.
it is assumed that our solar system formed almost 4.6 billion year before.It is formed when gravitational collapse of a giant molecular cloud.
Sun contained more than mass in our solar system in comparison of other planets.we can say the vast majority of mass is in sun in our solar system and Jupiter take second place that means Jupiter is the second heaviest body in our solar system while sun take place first.
In solar system four planets are smaller which is called inner planets.these planets know as also terrestrial planets.
1-MERCURY - Mercury is
the smallest planet in our solar system which closest planet also to
the sun.Orbital period of mercury is 88 days.lets clear first what is
the orbital period
Orbital period- orbital period is the time in which a astronomical object complete one orbit around to other astronomical object
the day temperature can be observed about 430 degree celsius and at night 700k cooler.Mercury rotate very slowly about its axis it take 2 months to complete one rotation about it axis
Mercury has no atmosphere it consist a large iron core. its surface has heavily cratered { big hall at the surface}this region knows as highlands.
But it surface has also smoother region which is knows as lowlands region.This lawlands always appears to have been floods of lava.
Mercury has no moon.Its atmosphere like a vacuum it is a shell of gases like hydrogen,helium,sodium,potassium,and oxygen.
some picture of the surface of Mercury had been taken by NASA spacecraft Mariner 10.
Surface of mercury |
A expedition Messenger has been started by NASA to study the composition and its magnetic field that mission launched in 2004.Mariner 10 has launched by NASA in 2015 to explored inner this planet.that was the latest expedition conducted by NASA.
MASS - 3.3011×1023 kg
ESCAPE VELOCITY- 4.25 km/s
MEAN RADIUS -- 2,439.7km
SURFACE AREA -- 7.48×107 km
GRAVITY SURFACE--3.7 m/s2 |
1-MERCURY - Mercury is the smallest planet in our solar system which closest planet also to the sun.Orbital period of mercury is 88 days.lets clear first what is the orbital periodOrbital period- orbital period is the time in which a astronomical object complete one orbit around to other astronomical object
the day temperature can be observed about 430 degree celsius and at night 700k cooler.Mercury rotate very slowly about its axis it take 2 months to complete one rotation about it axis
Mercury has no atmosphere it consist a large iron core. its surface has heavily cratered { big hall at the surface}this region knows as highlands.
But it surface has also smoother region which is knows as lowlands region.This lawlands always appears to have been floods of lava.
Mercury has no moon.Its atmosphere like a vacuum it is a shell of gases like hydrogen,helium,sodium,potassium,and oxygen.
some picture of the surface of Mercury had been taken by NASA spacecraft Mariner 10.
A expedition Messenger has been started by NASA to study the composition and its magnetic field that mission launched in 2004.Mariner 10 has launched by NASA in 2015 to explored inner this planet.that was the latest expedition conducted by NASA.
MASS - 3.3011×1023 kg
ESCAPE VELOCITY- 4.25 km/s
MEAN RADIUS -- 2,439.7km
SURFACE AREA -- 7.48×107 km
GRAVITY SURFACE--3.7 m/s2 |
A expedition Messenger has been started by NASA to study the composition and its magnetic field that mission launched in 2004.Mariner 10 has launched by NASA in 2015 to explored inner this planet.that was the latest expedition conducted by NASA.
MASS - 3.3011×1023 kg
ESCAPE VELOCITY- 4.25 km/s
MEAN RADIUS -- 2,439.7km
SURFACE AREA -- 7.48×107 km
GRAVITY SURFACE--3.7 m/s2 |
A expedition Messenger has been started by NASA to study the composition and its magnetic field that mission launched in 2004.Mariner 10 has launched by NASA in 2015 to explored inner this planet.that was the latest expedition conducted by NASA.
MASS - 3.3011×1023 kg
ESCAPE VELOCITY- 4.25 km/s
MEAN RADIUS -- 2,439.7km
SURFACE AREA -- 7.48×107 km
GRAVITY SURFACE--3.7 m/s2 |
| VENUS | -- |
|---|
Venus is the second planet from sun in our planet |
After the moon it is brightest natural object in night sky. it is also terrestrial planet.Venus also knows as sister of earth because of that it is the closest planet to earth.Earth and Venus both are similar in size ,gravity and composition
VENUS
But it is not look like the Earth both planet have different look. Its atmosphere is densest in the comparison of other three terrestrial planets . In the atmosphere of Venus present more than 96% of carbon oxide. the atmospheric pressure at Venus surface is 92 times of earth. Venus is the hottest planet in our solar system.
All planets in our solar system rotate in anti-clockwise direction on their axis besides Venus but is only one planet which rotate in clockwise direction on its axis Venus complete one rotation on its axis in 243 earth days Venus has slowest rotation period period among the other planet.Different kind of volcanoes are founded on the surface of Venus. 85% area of lowland is formed from flowing lava.Highest number of volcanoes is presented on the surface of Venus.This planets also knows as The Roman Goddess of Love and beautyMASS--4.8675×1024 kgSURFACE AREA--4.6023×108 kmESCAPE VELOCITY--10.36Km/sTEMPERATURE OF SURFACE IN DAY-462 °CTEMPERATURE AT SURFACE OF NIGHT -737 KSURFACE GRAVITY-8.87 m/s2 |
