Mercury, the fastest planet to run around sun, that is, it got a very less revolution period around sun of just about 88 days and revolution period of 58.646 days(Earth days).
Do you know?
Mercury planet got no atmosphere, therefore parachutes doesn't work there at all, anything onto the planet has to fall hard.
This is not earth's moon, it is mercury.
This is a composite image taken by Messenger. It is heavily crated which makes it a look alike of our moon.
The reasons of these craters is due to its geological inactive nature for over billions of years.
The orbit of mercury is highly eccentric(not near to circle), hence becoming the only planet with high eccentricity.
The variation in seasons on this planet is not because of its axial tilt but with its distance from sun at that particular point of time. . At perihelion, the intensity of sunlight on Mercury's surface is more than twice the intensity at aphelion. Because the seasons of the planet are produced by the orbital eccentricity instead of the axial tilt, the season does not differ between its two hemispheres.
Because Mercury's orbit lies within Earth's orbit, it can appear in Earth's sky either as a morning star or an evening star.
It was discovered by William Herschel in 1781.
Mercury got no moons due to its very near distance from sun, the sun pulls away the moons of the inner planets(mostly) and further detail explanation on this topic is done in the problems with two body systems.
Few other characteristics of mercury:
Escape velocity : 4.25 km/s
Equatorial rotation velocity : 3.026 m/s
Surface pressure : trace
Euatorial radius : 2,439.7 km
Axial tilt : 2.11′
Gravitational acceleration
on surface : 3.7 m/s2
Mercury planet got no atmosphere, therefore parachutes doesn't work there at all, anything onto the planet has to fall hard.
This is not earth's moon, it is mercury.
This is a composite image taken by Messenger. It is heavily crated which makes it a look alike of our moon.
The reasons of these craters is due to its geological inactive nature for over billions of years.
The orbit of mercury is highly eccentric(not near to circle), hence becoming the only planet with high eccentricity.
The variation in seasons on this planet is not because of its axial tilt but with its distance from sun at that particular point of time. . At perihelion, the intensity of sunlight on Mercury's surface is more than twice the intensity at aphelion. Because the seasons of the planet are produced by the orbital eccentricity instead of the axial tilt, the season does not differ between its two hemispheres.
Because Mercury's orbit lies within Earth's orbit, it can appear in Earth's sky either as a morning star or an evening star.
It was discovered by William Herschel in 1781.
Mercury got no moons due to its very near distance from sun, the sun pulls away the moons of the inner planets(mostly) and further detail explanation on this topic is done in the problems with two body systems.
Few other characteristics of mercury:
Escape velocity : 4.25 km/s
Equatorial rotation velocity : 3.026 m/s
Surface pressure : trace
Euatorial radius : 2,439.7 km
Axial tilt : 2.11′
Gravitational acceleration
on surface : 3.7 m/s2
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