December solstice 2019 arrives on December 22 at 04:19 UTC. That’s tonight for the Americas. High summer for the Southern Hemisphere. For the Northern Hemisphere, the return of more sunlight! Read more.
There's a supermassive black hole - 4 million times our sun's mass - in the center of our Milky Way galaxy. Astronomers who've measured star movements near this central black hole are now saying there might be a 2nd companion black hole near it. Read more.
Astronomers last week released new Hubble Space Telescope images of 2I/Borisov - the 2nd-known interstellar object, now characterized as a comet - shortly before and shortly after its December 8 perihelion. Read more.
The Ursid meteor shower runs from about December 17 to 26 each year and always peaks around the December solstice. After the solstice and the shower’s peak, keep watching. You still might catch some! Read more.
Day and night sides of Earth at the instant of the December 2019 solstice: December 22, 2019, at 04:19 UTC. That’s tonight for the Americas, as you can see on the map above. Image via EarthView. Read more.
