what can be observed only by observing its effects on gravity?\n○ dark matter\n○ a solar nebula\n○ gas and…
what can be observed only by observing its effects on gravity?\n○ dark matter\n○ a solar nebula\n○ gas and dust\n○ a planetesimal
Answer
Brief Explanations:
Dark matter does not interact with light or other electromagnetic radiation, but its presence can be inferred by observing its gravitational effects on visible matter, such as stars and galaxies. A solar nebula, gas and dust, and planetesimals can be detected through other means like direct observation or detection of electromagnetic radiation they emit or reflect.
Answer:
A. dark matter