The International Dark-Sky Association has campaigned for decades to reduce artificial light at night. Yet a new study shows our night skies still brightening at a rate of 2 percent each year.
Say hello to the much-photographed Triangulum galaxy - aka Messier 33 - a face-on pinwheel of swarming suns and the second-nearest spiral galaxy to our Milky Way.
You won't see Neptune in the moon's glare tonight, even with optical aid and a sky chart. Still, tonight’s moon can point the way for later this month.
The star Lambda Aquarii is your guide star to Neptune, once the moon has gone. Neptune demands high-quality binoculars or a telescope, patience and a detailed star chart.
Giant iceberg A-68A calved from Antarctica's Larsen C ice shelf. This photo, taken from a NASA aircraft on November 11, shows part of the iceberg’s edge and open water.
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