A video still from a computer model simulating an interaction between the Small and Large Magellanic Clouds, starting 1 billion years ago. The video shows a collision about 100 million years ago. Image via G. Besla/University of Arizona/ University of Michigan.
Star motions in the Small Magellanic Cloud - as revealed by the Gaia space observatory - confirm that this small satellite galaxy of our Milky Way collided in the past with its larger neighbor. Read more.
Europa has been thought to have water vapor plumes similar to those on Saturn's moon Enceladus. But new research shows Europa's plumes differ significantly from those on Enceladus, or perhaps don't exist at all. Read more.
Artist’s concept of a water vapor plume on Europa, via NASA/ESA/K. Retherford/SwRI.
Do you have binoculars? If you see Jupiter, but not Mercury, aim your binoculars at Jupiter and you might spot Mercury in the same field of view. These 2 worlds will fit in a single binocular field for several more days. As seen from around the globe, they're tough to spot in the west after sunset. The Southern Hemisphere has the best view. Read more.
View larger. | Here’s this morning’s bright moon - together with the stars we in the Northern Hemisphere see as “winter” stars - over Yuen Long, Hong Kong from our friend Matthew Chin.
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