direct images of two new planets
path of comet leonard in the evening sky
possible protostar in chamaeleon nebula
solar wind compresses saturn's magnetic field

StarDate Radio: December 19 — Ambrose Swasey

Many people celebrate their birthdays under the stars. But when Ambrose Swasey turned 89, he celebrated under a machine his...More »

StarDate Radio: December 18 — Long-Night Moon

Romantics and werewolves take note: There’s a lot of moonlight the next few nights — more than at any other...More »

Stargazing: December 18

The Moon is full tonight. Because we’re just a few days away from the winter solstice, the shortest day of...More »

StarDate Radio: December 17 — Precession

The Sun will change addresses tonight. It’ll move from Ophiuchus to the next constellation over, Sagittarius. That’s where it’ll reside...More »

Stargazing: December 17

The Sun will change addresses tonight. It will move from Ophiuchus to the next constellation over, Sagittarius. That’s where it...More »

StarDate Radio: December 16 — Moon and Aldebaran

Every star is losing mass. Some are just a lot more serious about it.

An example is Aldebaran, the eye...More »

Stargazing: December 16

Aldebaran, the eye of the bull, perches below the Moon as night falls and to the left of the Moon...More »

Stargazing: December 15

Cetus, the sea monster, crawls across the sky on December evenings. The constellation is in the south and southeast at...More »

StarDate Radio: December 15 — More Tycho Brahe

Tycho Brahe, who was born 475 years ago this week, in Denmark, was one of the most accomplished astronomers in...More »

StarDate Radio: December 14 — Tycho Brahe

Tycho Brahe was having a hard time deciding what to do with his life. He’d studied astronomy, but he was...More »

Stargazing: December 14

A colorful crab scuttles across the sky on December nights. The Crab Nebula is a cloud of glowing gas in...More »

StarDate Radio: December 13 — Big Fades

A young star in Orion presents a mystery. More than a decade ago, it twice faded by a good...More »

Stargazing: December 13

Two “dog stars” rise in mid evening. The brighter of the two is Sirius, the brightest star in Canis Major,...More »

Current Magazine

Cover of January/February 2022 StarDate/Sky Almanac issue

This year offers up some beautiful skywatching treats, including two good lunar eclipses and several planetary conjunctions. You can find all the details on these and many other events in our 2022 Sky Almanac (the January/February issue of StarDate magazine).

2022 Sky Almanac

This year offers up some beautiful skywatching treats, including two good lunar eclipses and several planetary conjunctions. You can find all the details on these and many other events in our 2022 Sky Almanac. Plan your skywatching adventures with tips on eclipses, meteor showers, and more, plus keep an eye on the bright planets.

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