Enjoying EarthSky? Subscribe.

129,919 subscribers and counting ...

Posts by Larry Sessions

Capella system, via Atlas of the Universe
Tonight | Jan 13, 2015

Capella is two golden stars

We see Capella as the brightest star in the constellation Auriga the Charioteer. It is really two stars, each with a golden color similar to our sun.

Tonight | Jan 09, 2015

Faint, fuzzy object near Sirius is a star cluster

Throughout January, look for a faint fuzzy object near the bright star Sirius. It’s called M41, and it’s a star cluster masquerading as a comet.

Blue-white Rigel via Clark Planetarium
Tonight | Videos | Jan 06, 2015

Rigel in Orion is blue-white

We couldn’t live as close to Rigel as we live to our sun, because Rigel is nearly twice as hot – and about 40,000 times brighter – than our local star.

Tonight | Dec 29, 2014

Aldebaran is the Bull’s fiery eye

If Aldebaran were placed where the sun is now, its surface would extend almost to the orbit of Mercury.

Tonight | Dec 26, 2014

Large Magellanic Cloud is spectacular from Earth’s Southern Hemisphere

From tropical or Southern Hemisphere latitudes, the Large Magellanic Cloud is easy to see and spectacular! Look for it in the evening from December to April.

Tonight | Dec 26, 2014

Can you see the different colors of the stars?

Winter is the perfect season for noticing the colors of the stars. Never noticed them? Our sky chart can help guide your eye.

Credit: Russell Croman
FAQs | Tonight | Dec 25, 2014

Was the Christmas Star real?

A wondrous star has grown to be a major symbol of Christmas around the world. But what was it, really?

Tonight | Dec 18, 2014

Bellatrix, Orion’s third brightest star, means Female Warrior

The third-brightest star in Orion, Bellatrix, is often overlooked. And yet Bellatrix is a wonderful star. The name means “Female Warrior.”

Geminid meteors radiate from near star Castor in Gemini.
Blogs | Tonight | Dec 10, 2014

Radiant point for December’s Geminid meteor shower

The December Geminid meteor shower radiates from the constellation Gemini – in the east in mid-evening or overhead by about 2 a.m.

Tonight | Dec 09, 2014

Start watching Jupiter. Moon shows you how on December 9

The best time to look for Jupiter is just ahead. Its retrograde motion begins today. Plus, the moon is near Jupiter tonight, and for the next several nights.