EARTH SCIENCE - Reviewer

10 to 20 billion years ago, a massive explosion allowed all the known matter, energy, time, and space to exist in the universe.

It is a NASA spacecraft that operated from 2001 to 2010 and measured temperature differences across the sky in the cosmic microwave background. Also known as "WMAP".

a spinning cloud of dust mostly made of light elements, flattened into a protoplanetary disk and became a solar system consisting of a star and orbiting planets.

• Encounter Hypothesis

• Nebular Hypothesis

• Protoplanet Hypothesis

• Gravitational Hypothesis

a rogue star passes close to the sun about 5 billion years ago. Material, in the form of hot gas, is tidally stripped from the sun and the rogue star.

• Encounter Hypothesis

• Nebular Hypothesis

• Protoplanet Hypothesis

• Gravitational Hypothesis

about 5 billion years ago, a great cloud of gas and dust rotated slowly in space. The cloud was at least 10 billion kilometers in diameter. As time passed, the cloud shrank under the force of its own gravity or was made to collapse by the sudden explosion of a passing star.

• Encounter Hypothesis

• Nebular Hypothesis

• Protoplanet Hypothesis

• Gravitational Hypothesis

EARTH’S CHARACTERISTICS TO SUPPORT LIFE:

is an excellent solvent, capable of dissolving many substances.

EARTH’S CHARACTERISTICS TO SUPPORT LIFE:

Life needs (Blank), without it nothing would happen.

EARTH’S CHARACTERISTICS TO SUPPORT LIFE:

habitable worlds need stars that can live at least several billion years, long enough for life to evolve.

EARTH’S CHARACTERISTICS TO SUPPORT LIFE:

Plate tectonics is vital for a world to host life, earth is a planet whose shell is broken up into plates that constantly move around.

EARTH’S CHARACTERISTICS TO SUPPORT LIFE:

This blocks any storms of charged particles from the sun.