Every year, at the December solstice, the sun enters the sign Capricorn. One month later, on January 19, 2021, the sun will enter the sign Aquarius. Look here for the dates for the sun's entry into each sign of the zodiac for the year 2021.

A study of oppositely charged magnetic field bands, moving in the sun's northern and southern hemispheres, suggests the coming sunspot cycle - Cycle 25 - will be a particularly strong one. This result contradicts an earlier expert forecast, suggesting a weak Cycle 25.

These next three nights - December 26, 27 and 28, 2020 - the bright waxing gibbous moon shines in front of the constellation Taurus the Bull.

A new spin on the Nutcracker Suite, featuring the moons of Saturn.

Astronomers with Breakthrough Listen have detected a mysterious radio signal coming from the direction of the nearest star to the sun, Proxima Centauri. But is it really an alien signal or something more terrestrial?

Astronomers used radio waves to study conditions in the vicinity of Proxima Centauri, the nearest star to our sun. The results suggest Proxima's 2 known planets are likely bathed in intense radiation from this star, casting doubt on the planets' potential for life.

A new strain of the virus that causes Covid-19 appears to be spreading fast in the the UK. Why it matters that the coronavirus is changing, and what it means for vaccine effectiveness.

Jupiter and Saturn's great conjunction - where they appeared exceedingly close on the sky's dome - was December 21. Thank you to EarthSky community members from around the world who captured photos!

China's robotic Chang'e 5 launched successfully last month atop a Chinese Long March 5 rocket. Now it's returned to Earth, loaded with moon rocks - the first since the Soviet Union’s Luna 24 mission in 1976.

Uranus likely won't be visible to the eye alone. But you'll easily see red Mars near the moon on December 22, 23 and 24, 2020. Mars isn't exactly blazing now. But it's bright, and very red, still a stunning sight, high in the sky at nightfall.