Question

if an object in space appears bright when viewed through a blue filter but dim when viewed through a red filter, what can astronomers conclude about this object?
the object is moving away from earth very quickly
the object emits or reflects more blue light than red light
the object is much closer to earth than previously thought
the object contains more hydrogen than other elements

Explanation:

• A blue filter allows blue light to pass through and blocks other colors. If the object appears bright through a blue filter, it means it emits or reflects a significant amount of blue light.
• A red filter allows red light to pass through. If the object appears dim through a red filter, it means it emits or reflects very little red light.

Answer:

The object emits or reflects more blue light than red light.