SH2-155: The Cave Nebula
This colorful skyscape features the dusty Sharpless catalog emission region Sh2-155, the Cave Nebula. In the composite image, […]
This colorful skyscape features the dusty Sharpless catalog emission region Sh2-155, the Cave Nebula. In the composite image, […]
Why is there a bright line on the sky? What is pictured above is actually a disk galaxy […]
Described at times as a big blue marble, from some vantage points Earth looks more like a small […]
Raise your arms if you see an aurora. With those instructions, two nights went by with, well, clouds […]
When orbiting Saturn, be sure to watch for breathtaking superpositions of moons and rings. One such picturesque vista […]
October 31, 1938 was the day after Martians encountered planet Earth, and everything was calm. Reports of the […]
A mysterious formation known as Devils Tower rises into the dark above northeastern Wyoming’s prairie landscape in this […]
Frightening forms and scary faces are a mark of the Halloween season. They also haunt this cosmic close-up […]
Sometimes your eclipse viewing goes bad in an interesting way. While watching and photographing last Thursday‘s partial solar […]
Why would Mars appear to move backwards? Most of the time, the apparent motion of Mars in Earth’s […]