Roses blurred in the universe

The rose-shaped nebula is one of the most impressive astronomical images of the week.

Sh2-174 , the name of a nebula, is shaped like a rose
giant in a photo by the US National Optical Observatory. ( Photo: NOAO)

Russian Soyuz spacecraft is preparing to connect to the International Space Station. (Photo: NASA)

The Danube River , Europe's largest river, flows through the biosphere reserve
Danube plain in Ukraine to the Black Sea. It flows through 19 countries. (Photo: USGS)

Green aurora strip above those
horse in northern Iceland. (Photo: Andre Erlich)

Star streaks in a photo taken in the background
Long exposure in India. (Photo: Steven Beckett)

Chaos scene in the center of the constellation Cygnus (or Swan).
This constellation is shaped like a swan bird flying in the universe.
People in the northern hemisphere can clearly see the Swan constellation on summer evenings.

A stream of plasma erupted from the sun's upper layer on February 22. (Photo: NASA)