During its formation in the protoplanetary disk, Earth was located too close to the Sun for ice to exist, and its low gravity couldn’t retain water vapor, leaving the planet initially bone dry.
- asteroid collisions Earth's atmosphere
- asteroid-delivered water
- carbonaceous chondrite water
- celestial water sources
- early atmosphere water
- Earth's dry beginnings
- Earth's water abundance
- Earth's water journey
- Earth's water origin
- Earth's water source theories
- hydrogen isotopic ratios
- hydrogen-oxygen isotopic analysis
- isotopic evidence for water
- meteorite isotopes Earth water
- meteorite water comparison
- origin of Earth's oceans
- oxygen isotopic ratios
- protoplanetary disk formation
- scishow
- water delivery via asteroids
- water locked in minerals
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