We see a fair number of photos of light pillars - shafts of light extending from the sun or other bright light source - taken from northerly latitudes. This one is caused by the moon, and it's over Earth's South Pole.
Most scientists believe the moon and Earth have been bombarded by meteorites at a constant rate for the past few billion years. New research suggests that - in the past 300 million years - it's been happening 2 to 3 times more frequently.
EarthSky friend Patricia Evans said she read about the giant ice circle slowly spinning in the Presumpscot River in Westbrook, Maine ... and had to go see it.
Have you been watching the 2 brightest planets - Venus and Jupiter- inch closer in the east before sunup? Closest the morning of January 22. Venus is brighter! Photos from the EarthSky community here.
Here's an alternative explanation to the Planet 9 hypothesis, the idea that a large undiscovered planet in the outer solar system is pulling on some small outer worlds, distorting their orbits.
Skywatchers! Check out this first video in the Chasing Darkness series, a stargazing destination guide. This episode - dark sky preserves in Alberta, Canada.
The waning moon - fresh from an eclipse - and the bright star Regulus in the constellation Leo the Lion will rise over your eastern horizon in the hours after sunset tonight.