Rainbow Airglow over the Azores
Why would the sky glow like a giant repeating rainbow? Airglow. Now air glows all of the time, […]
Astronomy
Alaskan Moondogs
What’s happened to the sky? Moonlight illuminates a snowy scene in this night land and skyscape made on […]
A Picturesque Equinox Sunset
What’s that at the end of the road? The Sun. Many towns have roads that run east – […]
3D Ahuna Mons
Get out your red/blue glasses and gaze across Ceres at mysterious mountain Ahuna Mons. Shown in a 3D […]
The W in Cassiopeia
A familiar, zigzag, W pattern in northern constellation Cassiopeia is traced by five bright stars in this colorful […]
Close Comet and Large Magellanic Cloud
Sporting a surprisingly bright, lovely green coma Comet 252P/Linear poses next to the Large Magellanic Cloud in this […]
A Phoenix Aurora over Iceland
All of the other aurora watchers had gone home. By 3:30 am in Iceland, on a quiet night […]
Dark Nebulas across Taurus
Sometimes even the dark dust of interstellar space has a serene beauty. One such place occurs toward the […]
Neon Saturn
If seen in the right light, Saturn glows like a neon sign. Although Saturn has comparatively little of […]
The Flash Spectrum of the Sun
In a flash, the visible spectrum of the Sun changed from absorption to emission on March 9 during […]