Total lunar eclipse
Hubble Space Telescope view of the Triangulum Galaxy
Multiwavelength view of the Crab Nebula, M1
Yutu, a small rover, rolls away from Chang'e 4

StarDate Radio: January 21 — Navi

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

cover of the 2019 Sky Almanac

Our 2019 Sky Almanac brings you a year's worth of skywatching tips, skymaps, anniversaries in astronomy and spaceflight, and more.


Featured Video