A second technique called asteroseismology - the measurement of tiny oscillations in the star's brightness - revealed Kepler 444's size, mass and impressive age, which researchers say provides billions of more years for ancient extraterrestrial life to have taken hold somewhere out there.
另一种所使用的技术称为星震学，用于测量恒星亮度的微小波动。科学家利用这种技术揭示了开普勒444的大小、质量和惊人的年龄。研究者们说，开普勒444的高龄说明，在这数十亿年的时间里，古老的外星生物说不定就在某个地方定居过。
