Earth – third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.
Astronomical object
Gravitationally rounded object
Planet
Planet of the Solar System
Inner planet
Terrestrial planet
Earth's location in the Universe
Universe – all of time and space and its contents.
Observable universe – spherical region of the Universe comprising all matter that may be observed from Earth at the present time, because light and other signals from these objects have had time to reach Earth since the beginning of the cosmological expansion.
Virgo Supercluster – one of the approximately 10 million superclusters in the observable universe. It spans 33 megaparsecs (110 million light-years), and contains at least 100 galaxy groups and clusters, including the Local Group.
Local Group – specific galaxy group that includes the Milky Way and at least 53 other galaxies, most of them dwarf galaxies.
Milky Way Galaxy – a specific barred spiral galaxy
Orion Arm – a spiral arm of the Milky Way
Solar System – the Sun and the objects that orbit it, including 8 planets, the 3rd planet closest to the Sun being Earth
Earth's orbit – path through which the Earth travels around the Sun. The average distance between the Earth and the Sun is 149.60 million kilometers (92.96 million miles).
Earth's orbit
Earth's rotation
Earth's precession
Age of the Earth
Figure of the Earth (size and shape)
Earth radius
Models of the Earth
Globe
World map
Gravity of Earth
Earth's magnetic field
Natural environment
Ecosystems
Biomes
Ecozones (list)
Bioregions
Ecoregions (list)
Anthroposphere
Noosphere
Structure of the Earth
Earth's surface
Lithosphere of Earth (solid Earth)
Earth's crust
Land
Landforms (list)
Continents
Africa
Antarctica
Asia
Australia
Europe
North America
South America
Pedosphere
Ocean floor
Earth's mantle
Earth's core
Outer core
Inner core
This sphere represents all water on Earth, wherever it is and in whatever form within the water cycle.
Water, by relative altitude
Atmospheric water
Water vapor
Clouds
Precipitation
Cryosphere (frozen water)
Polar ice caps
Ice sheets
Ice caps
Glaciers
Surface water
Bodies of water (list)
World Ocean
Southern Ocean
Oceans - This includes the Earth's 5 oceans: The Arctic Ocean, the Atlantic Ocean, the Indian Ocean, and the Pacific Ocean.
Groundwater
Water, by salt content
Fresh water
Brackish water
Seawater
Meteor showers (list)
Meteorite falls
Tides
Eclipse - This includes both a lunar eclipse and solar eclipse.
Equinox - This includes both the March equinox and the September equinox.
Solstice - This includes the Summer solstice, June solstice, Winter solstice, and December solstice
Manhattanhenge
Earth's moon
History of Earth
Age of the Earth
Geological history of Earth
Geologic time scale
Early Earth
Timeline of natural history
Geocentric model
Future of Earth
Global catastrophic risk
Climate change
