nebular hypothesis
Plural
nebular hypotheses
1
(cosmology) a theory proposing that the solar system formed from a rotating nebula of gas and dust about 4.6 billion years ago
- The nebular hypothesis suggests how our solar system formed.
- According to the nebular hypothesis, the planets formed from the leftover material.
- Astronomers use evidence from other star systems to support the nebular hypothesis.
- Studying planetary systems in our galaxy helps refine the nebular hypothesis.
- The nebular hypothesis is one of the leading theories of solar system formation.