2023 December solstice: All you need to know

The 2023 December solstice is December 22, at 3:27 UTC (December 21, at 9:27 p.m. CST). Northern Hemisphere's shortest day. Southern Hemisphere's longest day.

Visible planets and night sky for December

Visible planets: Venus dominates the morning sky. Bright Jupiter is visible most of the night. Saturn shines after sunset.

Meteor shower guide: Up next the Ursids and the Quadrantids

We've got several more meteor showers this year. Next up are the December Geminds followed by the Ursids. Your 2023-2024 meteor shower guide here.

Geminid meteor shower 2023: Cool photos!

See the best photos of the Geminid meteor shower of 2023 from our talented community of photographers, from all over the world.

10 tips for watching the Geminids in 2023

The Geminids make up a rich and much-loved annual meteor shower that peaks in mid-December. Here are 10 tips for watching the Geminids in 2023.

Mysterious 3200 Phaethon – parent to the Geminids – revealed?

3200 Phaethon is the weird comet-like asteroid that spawns the Geminid meteor shower. New research reveals more answers ... and questions.

What’s a red dwarf? Only the most abundant Milky Way star

A red dwarf star is smallest and coolest type of star known. They're also extremely common, making up around 60 to 70% of the stars in the Milky Way.

Thinking of buying a telescope? Read this 1st

Are you thinking of buying a telescope? Here's how to know if you're ready, with tips on what 1st-time buyers should look for.

Mars in 2023: Mars is too close to the sun to see now

Mars is no longer visible in our night sky. It's too close to the sun to see for the rest of 2023. It'll return in January 2024 as a light in our morning sky.

Winter meteor showers are here: Top 10 tips for watching

Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Maximize your viewing time with these 10 tips.