Look opposite the Sun in the sky tonight and you’ll see Mars at its brightest. Also within days of its closest approach Mars rises at sunset, near its brightest and […]

These dark markings on the sky can just be found in silhouette against a rich, luminous background of stars. Seen toward the southern constellation of Lupus the Wolf, the dusty, […]

What kind of celestial object is this? A relatively normal galaxy — but seen from its edge. Many disk galaxies are actually just as thin as NGC 5866, pictured here, […]

If you go high enough, you may find yourself on a picturesque perch between the water clouds of the Earth and the star clouds of the Milky Way. Such was […]

The Fermi Science Playoffs celebrate 10 years of the Fermi Gamma-ray Space Telescope’s exploration of the high-energy universe. Surviving all early rounds of voting, these two finalists in the competion […]

Have you seen a panorama from another world lately? Assembled from high-resolution scans of the original film frames, this one sweeps across the magnificent desolation of the Apollo 11 landing […]

Cerealia Facula, also known as the brightest spot on Ceres, is shown in this stunning mosaic close-up view. The high-resolution image data was recorded by the Dawn spacecraft, in a […]

What is creating these dark streaks on Mars? No one is sure. Candidates include dust avalanches, evaporating dry ice sleds, and liquid water flows. What is clear is that the […]

What’s that spot next to the Moon? Venus. Two days ago, the crescent Moon slowly drifted past Venus, appearing within just two degrees at its closest. This conjunction, though, was […]

With equipment frozen deep into ice beneath Earth’s South Pole, humanity appears to have discovered a neutrino from far across the universe. If confirmed, this would mark the first clear […]