- Mercury has highest number of creators and impact marks than other planet
- The creators in Mercury are not active to heal from surface impact created by asteroids and comets
- Its surface structure is closely similar to the surface of Moon
- Larger creator is called Basin whose diameter is more than 250 km.
- Mariner-10 spacecraft discovered the largest basin 'Caloris Basin' on Mercury which is about 1550 km in diameter
- Mercury has weak magnetic field
- Mercury planet has very weak magnetic which is about 1% of magnetic field of Earth.
- Man made object which visited Mercury
- Due to high temperature and closer distance to sun, it is difficult to reach Mercury
- Mariner-10 of NASA visited Mercury during 1974 flyby, after traveling a distance of 91 million kilometers
- Messenger spacecraft also visited Mercury which was launched in 2004
- Bepi-Colombo of European Space Agency is aimed to launch in the next window
- Mercury has very thin atmosphere
- Due to the weak gravitational field, it was unable to withhold its atmosphere. So that it continuously blown away into the space.
- Mercury has outer shell which is about 500-600 km
- Its Orbit helped Albert Einstein to prove "General Theory of Relativity"
- Mercury has large iron core about 1800-1900 km thick.
- It is the only planet in the solar system which improperly rotating around Sun every year. (2-3 times).
- Mercury is the second hottest planet in the solar system and has no seasonal changes.The night time temperature is about -770 degree Celsius and 430 degree Celsius in daytime.
- Due to low gravity and lack of atmosphere, it has no moons and rings.
- The Mercury was considered as planet only after the publication of paper "Sun centered model of the Solar system" in 1543 A.D.
- Mercury is named after the Roman God of Messenger.
- Mercury is the second dense planet after the Earth and the smallest planet in Our Solar System with a diameter of 4,879 km.
- Mercury is one of the five visible planet to our naked eye (Venus, Mars, Jupiter, Saturn).
- Mercury orbits quickly around the sun (2-3 times) so that it appears morning as well as in the evening.
- One year in Mercury = 88 days | One Mercury day = 176 Earth days
- Mercury was known to human race since 3000 B.C.
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