Type Ia supernovae are so luminous that they outshine their host galaxies for several weeks.
Ia型超新星如此之亮,以至于在几个星期内它的寄主星系的光芒也相形见绌。
The observations also show for the first time that a white dwarf can create a cavity around it before blowing up in a Type Ia event.
观测结果还首次显示,白矮星在爆炸成为Ia型超新星之前,会在其周围创造一个空洞。
Astronomers know that each Type Ia explosion has about the same brightness.
天文学家知道每种类型的Ia超新星的爆炸亮度相差无几。
Researchers first observed accelerated expansion by studying Type Ia supernovae-the explosive deaths of White Dwarf stars.
研究人员在研究Ia型超新星——白矮星爆炸中的消亡过程时首度观察到加速的膨胀。
Type Ia supernovae all explode with nearly the same amount of energy and therefore have almost the same intrinsic brightness.
Ia超新星爆发时辐射的能量几乎相等,因而具有几乎相同的本征亮度。