The night isn’t dark, it’s glowing with a silvery-white light. Up above, the 98% full moon looks huge and clear in the azure sky. It just might be the brightest moon you’ve ever seen. That’s because it’s the highest-riding full moon until the year 2023.
Above: The Moon photographed by P-M Heden of Vallentuna, Sweden.
And not far from the beautiful moon glows fireplace-red Mars. This Christmas Eve, Mars is at its closest to Earth for the next nine years. Mars is also “at opposition.” That’s astronomy-lingo for “directly opposite the sun.” It means Mars is up whenever the sun is down: on Christmas Eve, the Red Planet will be visible all night long.