Planet Mercury

Terrestrial Planet

The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth's Moon. Mercury is the fastest planet, zipping around the Sun every 88 Earth days.

From the surface of Mercury, the Sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter. Despite its proximity to the Sun, Mercury is not the hottest planet in our solar system – that title belongs to nearby Venus, thanks to its dense atmosphere.

10 Things to know
1 Smallest planet
2 Closest planet to the Sun
3 Long days, short years
4 Rough surface
5 Cant breath it
6 Moonless
7 Ringless
8 Tough place to live
Daytime Temperatures can reach 430 degrees Celsius (800 degrees Fahrenheit) and drop to -180 degrees Celsius (-290 degrees Fahrenheit) at night.
9 Big sun
10 Robotic visitors
Source
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While many people on earth do not care for their parents,
some on earth purposely do not see their father, grand father, father in law who has left life but is about to leave this earth.

Science increases age.
These born humans are so myopic thinkers & are so egoistic that they forget that
a day will come when they are grand parents or parents.
What is their children or grand children ask them : Did you see your father or grandfather or father on law when he was about to leave earth ?
Only they can tell you.
While we keep privacy, it will be known worldwide if they kill related persons or do accdident in such a way that they will think nobody will know the truth. But we believe in police and the mental as well as physical science they use to know the truth.
And they even can play smart life game by asking
their neighbours or relatives or friends in legal or medical system to do it, thinking they are free. But world will know the truth one day (when they are alive or dead. At least their grandson or graddaugher will know it)

As of now, we think there are humans on this planet and if we see them on another planet one day, we dont want this egoistic attitude transferred to them, not even robots.