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Deborah Byrd

Mars over a waterfall in Turkey

Basri Seckin said he set out to capture the Milky Way, but clouds got in the way. Then he realized he had this image of Mars.

1st quarter moon is December 15

The 1st quarter moon comes on December 15 at 11:49 UTC. A 1st quarter moon is high up at sunset. It appears half-illuminated, like half a pie. Really, you’re seeing half the moon’s day side.

How to see 2018’s brightest comet

Comet 46P/Wirtanen is closest to the sun today. It’ll be closest to Earth next week. With the moon waxing and casting more light in the sky, the time to see the comet is now. Charts, tips and other info here.

See it! Images of comet 46P/Wirtanen

The images are coming in fast! That tells us people are finding this comet relatively easily. Look here for photos and video of comet 46P/Wirtanen – 2018’s brightest comet – from the EarthSky community.

10 tips for watching the Geminids

#1. Geminid meteor numbers tend to intensify as evening deepens into late night, with the greatest number of meteors likely falling an hour or 2 after midnight. That’s true no matter where you are on the globe.

Himalayas at sunrise

Sudip Aich captured this image in late November from Sandakphu, a high peak in the Himalayas, surrounded by much-higher ones.

What will the sun do next?

Many have predicted a weak sunspot cycle in the years ahead, but new work from India suggests otherwise. The work dashes speculations of a sun-induced global cooling of Earth’s climate in the coming decade.

Saturday’s young moon and Saturn

Wow! We weren’t sure any of you would catch the moon and Saturn this weekend … but some of you did. Thanks to all who submitted.

All you need to know: Geminid meteor shower in 2018

The peak of the Geminid meteor shower is coming up on the mornings of December 13 and 14.

What is a sun pillar, or light pillar?

Sun pillars, or light pillars, are shafts of light extending from the sun or other bright light source. They’re caused by ice crystals drifting in Earth’s air.