Question

question 16 of 20
each second, the suns mass
increases.
remains constant.
decreases.
image credit: soho (esa & nasa)

Explanation:

The Sun undergoes nuclear fusion, converting hydrogen into helium. In this process, some mass is converted into energy according to Einstein's mass - energy equivalence formula $E = mc^{2}$. As a result, the Sun's mass decreases over time, including every second.

Answer:

decreases.