An astronomer see a star that is very far away but still very bright. what can she conclude about the star?

the star must be very large.

the star must be very small.

the star must be moving away from earth.

the star must be moving closer to earth.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

Me with these questions image attached

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return