Billions of years ago Mira was likely similar to our Sun, but has now become a swollen red giant star, its outer layers of material blowing off into interstellar space.

• 数十亿年前，苧藁增二是一颗类似我们太阳的恒星，但现在变成了一颗肿胀的红巨星，它外层的物质被吹到星际太空中。