A surprising fact about a 1 M_SUN protostar is that, even though nuclear reactions have not yet started in their cores, they are ________ than the Sun A) hotter B) rotating faster C) smaller D) denser E) more luminous

Question

Quizplus · Accepted Answer

A 1 MSUN protostar is more luminous than the Sun because it is still in the process of gravitational contraction, which releases energy and causes it to shine brightly even before nuclear fusion begins.

A Surprising Fact About a 1 MSUN Protostar Is That

A Surprising Fact About a 1 M_SUN Protostar Is That