Winter!

What cold looks like ... Three views of winter from EarthSky friends.

Reindeer under a New Year’s aurora

As 2015 opened, a beautiful aurora and reindeer gazing on northern tundra.

Supernova in the Superwind Galaxy

This is a Type Ia supernova. A white dwarf pulls matter from its companion star until it begins to collapse. Suddenly .. bam! It explodes as a supernova.

Volcano shadow in Hawaii

Mountains cast shadows, of course, but it's not often we get this perspective on one. Thank you, Stephen Green of Imaginscape Photography!

New Year’s Comet Lovejoy

Wow! Comet Lovejoy is really living up to its name! A wonderful December 29 photo from Justin Ng of Singapore and a link below to how you can see the comet.

Year’s end at Achill Island, Ireland

Late December night sky over the Irish island of Achill.

Analemma 2014, from Hong Kong

If you could record the position of the sun in the sky at the same time every day for a year, you'd record this figure-8 path, called an analemma.

Large Magellanic Cloud

Large Magellanic Cloud as captured by astrophotographer Justin Ng of Singapore. This hazy cloud in Earth's sky is a satellite galaxy to our Milky Way.

Celestial snow angel

A massive, young star lies is central to this "snow angel" nebula. Twin lobes of super-hot gas, glow blue in this image, forming the angel's wings.

Venus over Saronikos Gulf, Greece

The waxing crescent moon will be moving up past Venus in the first few days of this new week. Watch for them exceedingly low in the west after sunset.