Equatorial diameter4.9 million m
1.5 millionAfrican elephant heights
406,617Telephone poles
3.3 millionBlue whale hearts
Photo from Wikimedia Commons
Mercury
The smallest planet and closest to the Sun/Planets
Mercury is the smallest planet in our solar system and the nearest to the Sun, orbiting at an average distance of about 58 million kilometers. Despite its proximity to the Sun, it is not the hottest planet; that title goes to Venus. Mercury has virtually no atmosphere, leading to extreme temperature swings between day and night.
Measurements
Mass330 sextillion kg
1.6 quintillionStatues of Liberty
4.5Moons
Mean orbital speed47,362 m/s
33,830Swimming humans
48.3SR-71 Blackbirds
4,537Usain Bolts
Mean surface temperature440 K
2.26Dry ice surfaces
3.2 tenthsCandle flames
7.1 tenthsSoldering iron tips
Daytime up to 700 K, nighttime as low as 100 K
Sidereal day length5.1 million s
844,560Breaths
938Soccer matches
About 58.65 Earth days
Mean distance from the Sun57.9 billion m
579 trillionPaper thicknesses
2.2 trillionGuitar picks
3.2 billionRailroad car lengths