Driven by the explosion of a massive star, supernova remnant Puppis A is blasting into the surrounding interstellar medium about 7,000 light-years away. At that distance, this colorful telescopic field […]

How should Cassini say farewell to Saturn? Three days before plunging into Saturn’s sunny side, the robotic Cassini spacecraft swooped far behind Saturn’s night side with cameras blazing. Thirty-six of […]

What is that light in the sky? Perhaps one of humanity’s more common questions, an answer may result from a few quick observations. For example — is it moving or […]

A conjunction of comets is captured in this pretty star field from the morning of September 17. Discovered in July by a robotic sky survey searching for supernovae, comet C/2017 […]

The Moon, three planets, and a bright star gathered near the ecliptic plane in the September 18 morning sky over Veszprem Castle, Hungary. In this twilight skyscape, Mercury and Mars […]

Most photographs don’t adequately portray the magnificence of the Sun’s corona. Seeing the corona first-hand during a total solar eclipse is unparalleled. The human eye can adapt to see coronal […]

Wisps like this are all that remain visible of a Milky Way star. About 7,000 years ago that star exploded in a supernova leaving the Veil Nebula. At the time, […]

One of the brightest galaxies in planet Earth’s sky is similar in size to our Milky Way Galaxy: big, beautiful M81. This grand spiral galaxy can be found toward the […]

A beautiful conjunction of Venus and Moon, human, sand, and Milky Way is depicted in this night skyscape from planet Earth. The scene is a panorama of 6 photos taken […]

Almost out of view from our fair planet, rotating around the Sun’s western edge giant active region AR2673 lashed out with another intense solar flare followed by a large coronal […]