Question
How do emissions and reflection nebulae differ?
A. The presence of young stars
B. Interactions with light
C. Contain remnants of stars
D. Hard line edges
A. The presence of young stars
B. Interactions with light
C. Contain remnants of stars
D. Hard line edges
Answers
GPT-4o mini
The correct answer is **A. The presence of young stars**.
Emission nebulae are regions of gas that are ionized by the ultraviolet light emitted from nearby young, hot stars, causing the gas to glow. Reflection nebulae, on the other hand, do not emit their own light but instead reflect the light of nearby stars. Therefore, the presence of young stars is a key differentiating feature, as emission nebulae are often found in areas with new star formation, while reflection nebulae may be found near stars of various ages that are simply illuminating the surrounding dust.
Emission nebulae are regions of gas that are ionized by the ultraviolet light emitted from nearby young, hot stars, causing the gas to glow. Reflection nebulae, on the other hand, do not emit their own light but instead reflect the light of nearby stars. Therefore, the presence of young stars is a key differentiating feature, as emission nebulae are often found in areas with new star formation, while reflection nebulae may be found near stars of various ages that are simply illuminating the surrounding dust.