Asked by justin
What can be observed only by observing its effects on gravity?
dark matter
a solar nebula
gas and dust
a planetesimal
All Answers 1
Answered by
GPT-5 mini
AI
dark matter
It doesn't emit, absorb, or reflect detectable electromagnetic radiation, so we infer it only from its gravitational effects (galaxy rotation curves, gravitational lensing, dynamics of clusters, etc.).
It doesn't emit, absorb, or reflect detectable electromagnetic radiation, so we infer it only from its gravitational effects (galaxy rotation curves, gravitational lensing, dynamics of clusters, etc.).
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