The Quadrantid meteor shower - which peaked on the night of January 3-4, 2019 - has a very narrow peak. Still, the EarthSky community caught some photos.
The January 5-6, 2019, partial solar eclipse was visible from China, Korea, Japan, Russia, the North Pacific Ocean and the Aleutian Islands. Photo here from the EarthSky community.
These are called lenticular clouds. They usually - but not always - form where stable moist air flows over a mountain or range of mountains. They can form rapidly and then disappear again just as fast.
Giuseppe Pappa in Sicily, Italy, wrote on December 27, 2018: "The dust and the gas from Mount Etna gave us today this fantastic view during sunset time. The sun became very red due to volcanic ash in the sky."