所谓临月历是指从12月1日开始倒数耶诞节的来临，照片同样来自The Big Pictur，

第一幅图那是相当相当的漂亮。

In January 2002, a dull star in an
obscure constellation suddenly became 600,000 times more luminous than
our Sun, temporarily making it the brightest star in our galaxy. The
star, called V838 Monocerotis, has long since faded back to obscurity,
but observations of a phenomenon called a "light echo" around the star
have uncovered remarkable new features over the following years (this
animation covers two years’ time). The light echo is light from the
earlier explosion echoing off dust surrounding the star. Light from the
outburst traveled to the dust and then was reflected to Earth. Because
of this indirect path, the light arrived at Earth months after light
from the star that traveled directly from the star.