2007-02-02 03:06:09 · 2 answers · asked by ۞ JønaŦhan ۞ 7 in Science & Mathematics ➔ Astronomy & Space
I didn't ask for the change in lumonisity.
2007-02-02 03:26:18 · update #1
As the previous poster said, the Sun is 30% more luminous than it was when it first condensed from the primordial nebula. A star's luminosity directly determines how much heat and energy it's emitting, since the brighter and bigger the star, the hotter it is, and the more energy it's putting out as a result. Ergo, it is hotter today than it was when it formed. And it shall continue to grow hotter right up to the time it leaves main sequence and becomes a red giant five billion years from now.
2007-02-02 04:03:21 · answer #1 · answered by Sam D 3 · 0⤊ 0⤋
The sun is about 30% more luminous now than when it first formed, according to stellar evolution models.
2007-02-02 03:15:59 · answer #2 · answered by campbelp2002 7 · 1⤊ 0⤋