11 Questions
What is the name of the cloud of gas and dust where star formation begins?
Nebula
What causes the material in the nebula to collapse and form a star?
Its own weight
What is the process called when particles in the debris cloud stick together to form larger objects?
Planetary accretion
What are the early stages of planetary formation called?
Proto-planets
What did proto-Earth look like compared to Earth today?
Larger with no oceans or life
Which process caused the heavier elements to sink toward the center of proto-Earth?
Gravity
What are Vesta and Ceres?
Asteroids in the asteroid belt
How did the rocky planets of the inner Solar System, including Earth, form?
By pulling in more material through gravity
Approximately how long ago did the rocky planets of the inner Solar System, including Earth, form?
4.6 billion years ago
What happened to the proto-planets that became large enough?
They started pulling in more material
What is the composition of proto-Earth described as?
Homogeneous
Test your knowledge on the Nebular Hypothesis of Solar System Formation and the evidence supporting it. Explore the origins of our solar system through the swirling interstellar cloud of gas and dust known as a nebula. Find out how the Hubble Space Telescope and other sources have contributed to our understanding of this fascinating hypothesis.
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