But the alarming thing is that astronomers recently have been studying stars that are similar to our Sun, and they've found that a number of them, when they're about the age of our Sun, brighten by a factor of as much as 20. Doesn't last for very long.
Namun hal yang mengkhawatirkan adalah ahli astronomi belakangan telah mempelajari bintang yang serupa dengan matahari, dan mereka menemukan bahwa beberapa di antaranya, saat mereka seusia matahari, menjadi lebih terang 20 kali lipat.