Arrows show the velocities of approximately 4,000 Cepheid variable stars (IMAGE)
Caption
Arrows show the velocities of approximately 4,000 Cepheid variable stars. Green arrows represent closer stars, while magenta arrows indicate more distant stars. The green star (★) marks the average position of stars closer than 180,000 light-years, and the magenta star (★) marks those more than 230,000 light-years. Arrows from these stars show the average motion direction (northeast and southwest). The top of the figure is north, and the left side is east.
Credit
Satoya Nakano, Nagoya University
Usage Restrictions
Credit must be given to the creator.
License
CC BY