Today's AAAPOD goes to Mr. Tampubolon for this shot of the waxing crescent moon in the early evening hours with his newly acquired Seestar S50! We're starting a new collective for Seestar users of all ages and skill levels, the...

The North America Nebula and its close neighbor the Pelican Nebula make up an incredibly large region of nebulosity in the constellation Cygnus, designated as Sh2-117 in the second Sharpless catalogue. Sh2-117 is indeed just one regio...

  M101, also known as the Pinwheel Galaxy, is maybe the best example of a face-on, grand design spiral galaxy in our night sky. Gravitational interactions with nearby satellite galaxies introduce tidal forces which interrupt th...

The brightness of the image produced by a telescope or lens is determined by its F/ ratio, the proportion between the optic's focal length and the diameter of its primary objective optic, be it a lens or a mirror. The focal length det...

The Cygnus Wall is a region of intense star formation in the North America Nebula, within the constellation of Cygnus, the Swan. The visible parts are regions where ultraviolet light from a very hot central star ionizes low pressure g...

The sunspot group designated AR 3723 is the remnants of AR 3664, the sunspot group responsible for the historic G5 geomagnetic storm and aurora show on May 10-11, after two more trips around the sun. The sun has a period of rotation o...

The Veil Nebula is one of the best known supernova remnants in the night sky. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of the explosion, the sup...