Question

which of the following is not a characteristic of a spiral galaxy?which of the following is not a characteristic of a spiral galaxy?most of its material is in the shape of a flattened disk.it has quite a bit of gas and dust in it.it has young stars and bright emission nebulae.when we take spectra of its stars, they have far less of the heavier elements than the sun?the bright stars in it can be seen organized into distinct spiral arms.

Answer 1

The characteristic that is not a characteristic of a spiral galaxy is when the bright stars can be seen organized into distinct spiral arms. Therefore, the correct option is D

Step-by-step explanation:

A spiral galaxy is characterized by having most of its material in the shape of a flattened disk, having quite a bit of gas and dust, having young stars and bright emission nebulae, and having stars with far less of the heavier elements compared to the Sun. Therefore, the correct answer is the option that does not fit the characteristics mentioned, which is:the bright stars in it can be seen organized into distinct spiral arms. Spiral galaxies have bright stars organized into distinct spiral arms, so this is not an incorrect characteristic of a spiral galaxy.