Comet Wirtanen's path across the December sky
Saturn Nebula
Asteroid Bennu from a distance of 85 miles
Early image of Mars from the InSight lander

StarDate Radio: December 11 — Young Giants

A galaxy from the early universe appears to be churning out massive stars the way GM churns out cars —...More »

StarDate Radio: December 10 — Stretching Out

Like a housecat after a nap, the universe is stretching its legs. Thanks to the Big Bang in which it...More »

Stargazing: December 10

Eridanus, the river, meanders across the southern sky at this time of year. It is one of the largest constellations,...More »

Stargazing: December 9

The Milky Way arches high overhead on December evenings. It outlines the disk of our home galaxy. At nightfall, it...More »

StarDate Radio: December 9 — Stars Old and Young

The Milky Way arches high overhead on December evenings. This hazy band of light outlines the disk of our home...More »

Stargazing: December 8

The planet Saturn is near the Moon tonight. They are quite low in the southwest at sunset, so there’s little...More »

StarDate Radio: December 8 — Moon and Saturn

A big dust storm blanketed the planet Mars for much of this year, hiding much of the surface from view....More »

Stargazing: December 7

Saturn is disappearing from view. The giant planet perches quite low in the southwest not long after sunset, so even...More »

StarDate Radio: December 7 — Saturn Nebula

Saturn is disappearing from view. It’s quite low in the southwest as night begins to fall, so even though it’s...More »

Stargazing: December 6

Canis Major, the big dog, will trot across the southern sky tonight. It’s marked by Sirius, the Dog Star —...More »

StarDate Radio: December 6 — The Little Dog

The big dog trots across the southern sky on these late-autumn nights — the constellation Canis Major. It’s conspicuous thanks...More »

Stargazing: December 5

Bright orange Mars is in the south at nightfall. Tonight, Neptune is to its upper left by less than the...More »

StarDate Radio: December 5 — Mars and Neptune 

Neptune is a forgotten giant. It’s the fourth-largest planet in the solar system — almost four times the diameter of...More »

Current Magazine

cover of the November-December 2018 issue

Our November/December issue brings you a holiday treat: Nick D'Alto returns with a feature on how — and when! — cultures around the world celebrate the new year based on different heavenly markers. And editor Rebecca Johnson will bring you up to speed on New Horizons' upcoming post-Pluto encounter with another distant world. 

2018 Sky Almanac

Sky Almanac cover

Even though 2018 is more than half gone, you can still plan the rest of this year's stargazing adventures with our 2018 Sky Almanac, which offers skywatching tips, charts, Moon phases, and much more. And for the rest of the year, we've reduced the price! Order online or call 1-800-STARDATE during regular business hours.

Order online

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