Gamma Cassiopeia is a busy star system. The main star is surrounding itself with a disk of gas and dust....More »
▶StarDate Radio: January 20 — Lunar Eclipse II
In a bit of a coincidence, a total lunar eclipse will shine through American skies for the second January in...More »
★Stargazing: January 20
A total lunar eclipse will shine through American skies tonight. It gets under way at 9:34 p.m. CST, when the...More »
▶StarDate Radio: January 19 — Lambda Draconis
At the ends of their lives, stars like the Sun do a double dip. They puff up to giant proportions,...More »
★Stargazing: January 19
Lambda Draconis, the star at the end of the tail of Draco, the dragon, is puffing up. It is about...More »
★Stargazing: January 18
A supermoon is coming on Sunday night. The Moon will be full only half a day before it reaches its...More »
▶StarDate Radio: January 18 — Lunar Eclipse
We give full Moons all kinds of names. The full Moon of January, for example, traditionally is known as the...More »
★Stargazing: January 17
Aldebaran, the star that represents the eye of Taurus, the bull, stands close to the upper right of the Moon...More »
▶StarDate Radio: January 17 — Hidden Crater
Glaciers keep secrets. They hide rivers, hills, and other surface features. They conceal the bodies of animals that roamed the...More »
★Stargazing: January 16
The Moon has a bright companion tonight. Aldebaran, the brightest star of Taurus, is to the lower left of the...More »
▶StarDate Radio: January 16 — Moon and Aldebaran
In the first pictures of the far side of the Moon, one feature stood out: a dark circular patch. Since...More »
▶StarDate Radio: January 15 — Geosynchronous Orbit
In many sci-fi movies and TV shows, orbiting spacecraft take up “stationary” positions over New York, London, or some other...More »
★Stargazing: January 15
The brilliant planets Venus and Jupiter team up with the star Antares in the southeast the next few days to...More »
Current Magazine
Our 2019 Sky Almanac brings you a year's worth of skywatching tips, skymaps, anniversaries in astronomy and spaceflight, and more.
