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terraforming (planetary engineering)
The process of terraforming is part of transforming other planets into a habitable environment for humans.
earth science
Earth science is an important field of study for unraveling the mysteries of nature.
an Earthling; a Terran
I am an Earthling.
extraterrestrial area
We are searching for extraterrestrial life.
(astronomy) solar day
A solar day is the time it takes for the Earth to orbit around the Sun.
sun god
He was reading a book about the ancient Egyptian sun god.
a solar tide
The ocean currents can change due to the effect of the solar tide.
solar battery
We installed solar batteries on the roof of our house.
(astronomy) the Solar System
The Solar System is composed of eight planets, including Earth.
solar wind
Solar wind affects the Earth's magnetic field.
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