Only 2 other fossil clouds are known in our universe, and both were serendipitous discoveries. Then astronomers began searching for these rare relics, and found one!
Scientists have long said that Saturn's glorious rings may be only temporary. New research confirms a "ring rain" onto Saturn that'll leave the planet ringless in 300 million years, or sooner.
And a spacecraft sees it happen! Rosetta spacecraft data reveals an infant bow shock - similar to what forms at the bow of a ship - at the comet this craft explored for 2 years. It's the 1st seen forming anywhere in our solar system.
NASA's Parker Solar Probe has now swept within the sun's corona, or outer atmosphere.. No other spacecraft has ever come this close to the sun's surface! And, it's going to get closer.
It's more than 100 times Earth's distance from our sun, and it takes 1,000 earthly years to orbit the sun once. Astronomers have labeled it 2018 VG18, but nicknamed it Farout!
The shower peaked late last week, but, with all the comet excitement going on, people didn't start submitting their best Geminid images until the weekend.
On December 21, NASA's Juno spacecraft will make its 16th science pass over the cloud tops of Jupiter, marking the halfway point in the solar-powered spacecraft's prime mission.
Astronomers have discovered that a Neptune-sized exoplanet - HAT-P-11b - has an even larger helium atmosphere than first thought. The atmosphere is literally inflated like a massive balloon.