Organ pipe cactus (Stenocereus thurberi), at night in Organ Pipe Cactus National Monument, Sonoran Desert, Arizona, United States of America, North America

Concentric star trail over a bell tower in the Italian countryside, Emilia Romagna, Italy, Europe

Startrail with tree in silhouette in foreground, Khama Rhino Sanctuary, Botswana, Africa

Long exposure of the Milky Way above the cape of Pen Hir, Brittany, France, Europe

Mount Catria summit cross by night, Apennines, Marche, Italy, Europe

Night photography at South Canyon, just before river mile 32, Grand Canyon National Park, Arizona, United States of America, North America

An autumn view of the Milky Way over the Atlantic Ocean, seen from the cliffs of Land's End, the most southwesterly point of Great Britain, Cornwall, England, United Kingdom, Europe

Night photography at Blacktail Canyon, just before river mile 121, Grand Canyon National Park, Arizona, United States of America, North America

Milky Way core rising over a peak in the Wadi Rum desert, Jordan, Middle East

Aurora Borealis (Northern Lights) over the mountains, Finnmark, Norway, Scandinavia, Europe

M33, the Triangulum Spiral, a dwarf spiral in the Local Group. This is a 6-image stack of 12-minute exposures with the Canon 7D at ISO 800 on the 130mm Astro-Physics apo refractor at f/6 on AP 600E mount and SBIG SG4 autoguider. Poor seeing bloated star images somewhat.

Messier 101, the Pinwheel Galaxy in Ursa Major, a classic face-on spiral galaxy, large and obvious in binoculars. The odd galaxy at bottom is NGC 5474.

Messier 51, the Whirlpool Galaxy, the classic face-on spiral galaxy in Canes Venatici in the northern spring sky.

M31, Andromeda Galaxy, Composite

NGC 1232, Spiral Galaxy, Optical

M31, Andromeda Galaxy, Composite

Spiral Galaxy M81

NGC 6946, The Fireworks Galaxy

Pinwheel Galaxy, M101, NGC 5457, Composite

Sparkling Black Eye Galaxy

Sculptor Galaxy, NGC 253, Caldwell 65

Southern Pinwheel Galaxy M83, Optical

Triangulum Galaxy

Jets from a galactic supermassive black hole, illustration

Spiral Galaxy M81, NGC 3031, Optical

Messier 33, M33, NGC 598, Triangulum Spiral Galaxy

NGC 2207 and IC 2163, Merging Galaxies

Milky Way Galaxy

Aurora Borealis Over Mountains Within Denali National Park On A Very Cold Winter Night. The Andromeda Galaxy Is Visible To The Left, Alaska, United States Of America

Silhouette of rocks under starscape in the Dolomites, South Tyrol, Italy

Milky Way galaxy over mountains

Milky Way galaxy over mountains