Larry Sessions
Moon in Gemini.

Moon and Gemini stars on April 1 and 2

Watch for Gemini’s 2 brightest stars – Castor and Pollux – near tonight’s moon. On the other side of the moon, you’ll see a 3rd bright star. It’s Procyon in the constellation Canis Minor, the Lesser Dog.

Mimosa, 2nd-brightest in Southern Cross

To see Mimosa, you need to be at the latitude of New Orleans, Hawaii, Cairo or New Delhi. From the Southern Hemisphere, Mimosa is a prominent and beloved star.

Image of bright star Pollux against a backdrop of fainter stars.

Pollux: The brighter twin star

Pollux, the brightest star in the constellation Gemini, blazes in a golden light next to its bluish-white heavenly twin, Castor, in the evening skies of the Northern Hemisphere’s spring.

Image of bright star Castor against a backdrop of fainter stars.

Castor is six stars in one

The bright bluish-white star, Castor, in the constellation Gemini, appears to our eyes as a single star. But it’s actually a family of 6 stars.

Come to know orange Arcturus in Boötes

Orange Arcturus is more evolved than our sun and has swollen up to a larger size. It’s less than 37 light-years away and appears as the brightest star north of the celestial equator. The Big Dipper can help you find it.

Procyon is the Little Dog Star

The Dog Star, Sirius, is easy to spot because it’s the sky’s brightest star. Procyon – the other Dog Star – is near its brighter brother on the sky’s dome.

See a faint star cluster near bright Sirius

Sirius is easy to find. It’s the sky’s brightest star. If you have binoculars and a dark location, look near it for the star cluster M41.

Rigel in Orion is blue-white

Rigel, brightest star in the easy-to-see constellation of Orion the Hunter, shines with a blue-white color. Hidden behind its brilliant classic beauty is a fascinating and complex stellar life history.

A crescent moon with lines drawn between the 2 horns of the crescent, and a 2nd line drawn perpendicular to the 1st to indicate the sun's whereabouts.

Moon phase a clue to the sun’s position

If you look in a clear western sky at dusk and early evening, you should spot the waxing crescent moon. Notice that its lighted crescent points toward the sunset.

Can you see stars’ different colors?

December is the perfect time for noticing the colors of the stars. Never noticed them? Today’s sky chart can help guide your eye.