Photo of the impressive universe last week

Dust and gas emanating from the star, clouds form a giant swirl above the Pacific Ocean, which is impressive astronomical images in the past week.

Saturn's Rhea and Dione satellites are quite similar in the photograph taken by NASA's Cassini spacecraft.

The giant whirlpools form a green area close to the shores of France's Biscay Bay. This spectacle was captured by the American satellite Aqua.

Two streams of air and dust erupted from both sides of a star in an infrared image taken by the US Spitzer space telescope.

Clouds form a giant vortex above the Pacific Ocean. This scene was taken from the International Space Station.

Many types of nebulae coexist in the star-forming region called Rho Ophiuchi. For example, the white and pink nebula in the center of the image glows by dust, its gas heated by the star in the center. In contrast, the nebula in the lower right corner emits red light due to dust, its gas reflects light from the star in the middle of the nebula.

Smoke rises from the forest fire north of Ruidoso Downs, New Mexico, USA.The fire started on April 2 and has not been extinguished.