Planet Earth

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The Earth is the third planet from the Sun in the Solar System. As a planet, it took a while before it was even realised it was even a planet or it's relationship to the solar system. For the humans on it it took quite some clever thinking to realise where it was.

A realtime image from 13:30 on 22/04/2019 from himawari8 satellite

The study of Earth is also known as the Earth Sciences

Orbit basics:

• Distance from sun: between 147,098,291 and 152,098,233 km (the average is called 1 AU (astronomical unit at 1.495978707 x10¹¹m). The difference is about 4,999,942 km or about 3.2 % of the furthest distance. 
• Orbital period (it's year):  365.26 Earth days
• Moons (natural satellite):
• 1; Luna, The Moon, tidally locked orbit.

Planet basics:

• Type of planet: The original rocky/terrestrial
• Length of day: 23.934 hours
• Average radius: 6,371.00 km
• Mass: 5.9722 x 10²⁴ kg
• Surface gravity: 1 g or 9.80665 m/s²
• Escape velocity: 11.186 km/s (40,270 km/h)
• Mean density: 5.515 g/cm³
• Surface temperature: min of−89.2 °C average of 14 °C maximum of 57.8 °C
• Atmosphere: Substantial enough
• Pressure: 1 bar or 101.325 kPa (Mean Sea Level) sea also air pressure
• Atmospheric composition: 
• 78.08% nitrogen (N₂) (dry air)
• 20.95% oxygen (O₂)
• 0.93% argon
• 0.038% carbon dioxide
• About 1% water vapor (varies with climate)
• wide range other chemical traces, such as NO_x(nitrous oxides), SO (sulphur oxides), O₃ ozone (safer and essential in the ozone layer, but a health hazard at lower altitudes)