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.
Mais la chose alarmante est que des astronomes ont étudié récemment des étoiles similaires à notre Soleil, et ils ont trouvé que certaines d'entre elles, quand elles atteignent l'âge de notre Soleil, brillent 20 fois plus. Ne durent pas très longtemps.
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.
Mais la chose alarmante est que des astronomes ont étudié récemment des étoiles similaires à notre Soleil, et ils ont trouvé que certaines d'entre elles, quand elles atteignent l'âge de notre Soleil, brillent 20 fois plus. Ne durent pas très longtemps.