3月6日(p1)、8月1日(p2)图
for生生
On March 6 in 2012
Beta Pictoris Disk
In 1984, Beta Pictoris was the very first star discovered to be surrounded by a bright disk of light-scattering dust and debris. Planets are thought to form in such disks, and astronomers have discovered two planets orbiting Beta Pictoris.
On August 1 in 2005
Galaxy NGC 1672
NGC 1672 is a barred spiral galaxy. Its arms do not twist all the way to the galaxy's center but attach to the ends of a bar of stars that extends from the nucleus. Clusters of hot, young, blue stars form along the spiral arms, while surrounding clouds of hydrogen gas glow red.