Named for a cosmic cloud hunter, Australian astronomer Colin Stanley Gum (1924-1960), The Gum Nebula is so large and close it is actually hard to see. In fact, we are […]

This galaxy is having a bad millennium. In fact, the past 100 million years haven’t been so good, and probably the next billion or so will be quite tumultuous. Visible […]

Why does the right part of this image of the Moon stand out? Shadows. The terminator line — the line between light and dark — occurs in the featured image […]

How do Jupiter’s clouds move? To help find out, images taken with NASA’s Juno spacecraft during its last pass near Jupiter have been analyzed and digitally extrapolated into a time-lapse […]

Posing near the western horizon, a brilliant evening star and slender young crescent shared reflections in a calm sea last Thursday after sunset. Recorded in this snapshot from the Atlantic […]

Posing near the western horizon, a brilliant evening star and slender young crescent shared reflections in a calm sea last Thursday after sunset. Recorded in this snapshot from the Atlantic […]

Dodging powerful laser beams, a drone captured this stunning aerial view. The confrontation took place above the 8.2 meter diameter Very Large Telescopes of the Paranal Observatory on planet Earth. […]

Captured last week after sunset on a Chilean autumn night, an exceptional airglow floods this allsky view from Las Campanas Observatory. The airglow was so intense it diminished parts of […]

This image is not blurry. It shows in clear detail that the largest satellite galaxy to our Milky Way, the Large Cloud of Magellan (LMC), rotates. First determined with Hubble, […]

Four hundred years ago today (May 15, 1618) Johannes Kepler discovered the simple mathematical rule governing the orbits of the solar system’s planets, now recognized as Kepler’s Third Law of […]