Canis Major
Sunrise on Mars, February 16, 2018
Hubble Space Telescope view of NGC 3344
messier 48
Lupus 3 star forming region

StarDate Radio: February 22 — Mirzam

The Sun is a sedate, middle-aged star. It steadily “fuses” the hydrogen in its core to make helium, which...More »

StarDate Radio: February 21 — Wezen

When we look at the starry night sky, our eyes and brains play tricks on us. They make us...More »

Stargazing: February 21

Canis Major, the big dog, is in the southeast as night falls. The constellation’s third-brightest star, Wezen, is one of...More »

StarDate Radio: February 20 — Canis Major

Winter brings out the big dogs — some of the most prominent constellations of all. And one of those...More »

Stargazing: February 20

The constellation Canis Major, the big dog, is best known for its leading light: Sirius, the Dog Star, the brightest...More »

StarDate Radio: February 19 — Doomed Moons

Some moons lead dangerous lives. Two moons of the planet Uranus, for example, are likely to be destroyed in...More »

Stargazing: February 19

Three constellations in view this month are named for early machines: Sextans, Antlia, and Pyxis — the sextant, air pump,...More »

StarDate Radio: February 18 — Columba

Here’s a phrase that you probably haven’t heard before: solar antapex. It’s the location in the sky that’s opposite...More »

Stargazing: February 18

Columba, the dove, scoots low across the south tonight, to the lower right of Sirius, the brightest star in the...More »

Stargazing: February 17

Mercury, the smallest of the solar system’s major planets, is hiding in the Sun’s glare. It lines up behind the...More »

StarDate Radio: February 17 — Mercury in Conjunction

The smallest of the solar system’s major planets is hiding in the Sun’s glare right now. That’s because Mercury...More »

Stargazing: February 16

Beta Pictoris, a star in the constellation Pictor, is visible low in the south from the far-southern United States. The...More »

StarDate Radio: February 16 — Flying Across Titan

Most of the spacecraft that have touched down on other worlds have been either stationary landers or wheeled rovers....More »

Current Magazine

cover of March-April 2018 issue

In our March/April issue, we'll introduce you to several groups of researchers preparing for future trips to Mars in simulated Mars environments on Earth. And we'll tell you about the life of Benjamin Banneker, a pioneering African-American astronomer of the Revolutionary era. 

2018 Sky Almanac

Sky Almanac cover

Plan all of your stargazing adventures with our 2018 Sky Almanac, which offers skywatching tips, charts, Moon phases, and much more. Order online or call 1-800-STARDATE during regular business hours.

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