Smaller light echoes have been seen around super novae .

在超新星附近可以看到微弱的光反射。

The average is two or three bright novae in a century .

平均一个世纪有两三颗很亮的新星。

But for the novae theory to be true , faster moving material from the supernova should eventually catch up and collide with the gas and dust from the nova eruptions .

但是如果新星理论是正确的，那么超新星较快移动的材料最终会追上并与新星喷发的气体和尘埃相遇。