The Japan-led XRISM observatory has captured the most detailed portrait yet of gases flowing within Cygnus X-3, one of the most studied sources in the X-ray sky.
This visual illusion of physical closeness will appear in the constellation Taurus. Week 3 (December 15-21) A full moon appears on December 15. This full moon is known colloquially as the Cold moon.
the constellation Orion rises due east, every where on Earth, a fact used to navigate the oceans for thousands of years (Rice/Stellarium) Here in the northern hemisphere, you can find Polaris tonight ...
As their name implies, the Geminid meteor shower originates from the Gemini constellation, Gemini remains visible throughout the night for the northern hemisphere over the month of December, just ...