The night sky is full of shapes that evoke human awe. Among them, the Horsehead Nebula remains a favourite. Astronomers say this dark cloud resembles a horse’s head only by chance. The Horsehead ...

July’s night skies are legendary for their sheer abundance of celestial objects such as immense star clouds, light and dark nebulae, crowded clusters and oddities. Daniel Zantzinger / Skywatcher's ...

In June of 1878, just a few years after he was acquitted for murder, Eadweard Muybridge made history at a racetrack in Palo Alto, California. Library of Congress, Prints and Photographs In June of ...