Why is Mercury so small?
Answers
Hey dude,
Like a raisin spinning around the sun, Mercury is shrinking and wrinkling. The planet is now up to 8.6 miles (14 kilometers) smaller in diameter than it was nearly four billion years ago, according to a report released on Sunday. The planet is downsizing because it is cooling.
@CollinsKey

The gravitational force of attraction would be very large and the orbit unstable. The low mass of Mercury allows for a stable planetary system. It is the closest planet to the sun, but it's actually not the hottest. Like a raisin spinning around the sun, Mercury is shrinking and wrinkling. The planet is now up to 8.6 miles (14 kilometers) smaller in diameter than it was nearly four billion years ago, according to a report released on Sunday. The planet is downsizing because it is cooling.