Apollo 17 commander Eugene Cernan poses on the Moon in 1972
sequence of images depicting the merger of M31 and Milky Way galaxies
Infrared view of Orion Nebula and surrounding clouds of gas and dust
Artist's concept of 2016 WF9
Enhanced-color image of Charon from New Horizons

StarDate Radio: January 17 — Super Supernovae II

A supernova that was discovered a couple of years ago has astronomers doing a lot of head scratching. The explosion...More »

StarDate Radio: January 16 — Super Supernovae

Every supernova is a brilliant beacon — a stellar explosion that can outshine an entire galaxy. But in recent years,...More »

Stargazing: January 16

One of the dimmest but best-known constellations of the zodiac is in fine view right now. Aries, the ram, stands...More »

StarDate Radio: January 15 — Scary Asteroids

Astronomers compile catalogs of all kinds of objects: variable stars, black holes, binary stars, and many others. One of their...More »

Stargazing: January 15

From southern latitudes of the U.S., the two brightest stars in the night sky line up in the south tonight....More »

StarDate Radio: January 14 — Moon and Regulus

Regulus is one of the brightest stars in the night sky, so people have been looking at it since the...More »

Stargazing: January 14

Look for Regulus, the heart of Leo, quite near the Moon as they climb into view in mid evening, and...More »

StarDate Radio: January 13 — Local Supercluster

The structure of the universe is like a Russian matryoshka doll — each bit is nested inside a larger one....More »

Stargazing: January 13

Auriga, the charioteer, rides high across winter’s evening skies. To find it, look for its brightest star, Capella, which stands...More »

StarDate Radio: January 12 — Local Group IV

The Milky Way is doomed. Our home galaxy will collide with the Andromeda galaxy. The collision will scramble both of...More »

Stargazing: January 12

From a dark skywatching location, the Andromeda galaxy is visible to the unaided eye. It looks like a tiny smudge...More »

StarDate Radio: January 11 — Local Group III

Astronomers have spotted what may be the puniest galaxy ever seen. It has so few stars that it emits just...More »

Stargazing: January 11

The planet Venus, which shines as the brilliant “evening star” right now, stands farthest from the Sun for its current...More »

Current Magazine

cover of the 2017 Sky Almanac

Our 2017 Sky Almanac brings you a year's worth of skywatching tips, skymaps, anniversaries in astronomy and space flight, and more.

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