Posts by 

Larry Sessions

Blue-white Rigel is Orion’s brightest star

Blue-white Rigel shines as the brightest star in the constellation Orion the Hunter. It's a hot massive star in the latter stages of its stellar evolution.

Procyon: 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.

Meet the Crab Nebula, remnant of an exploding star

The Crab Nebula, the scattered fragments of a supernova, or exploding star, was observed by earthly skywatchers in the year 1054.

No leap second for December 31, 2021

World timekeepers have decreed there will be no leap second on December 31, 2021. Overall the spin of Earth is slowing down, but in 2020 it sped up.

The Magellanic Clouds, our galactic neighbors

The Large and Small Magellanic Clouds are two of the closest galaxies to the Milky Way. They can be seen without optical aid from southern skies.

The colors of the stars you can see with your eyes

December is the perfect time for noticing the colors of the stars. Never noticed them? Check them out tonight!

Achernar marks the End of the River

Achernar is the 9th brightest star and flattest star known. It marks the end of Eridanus the River. Here's why much of Earth never sees it ... and how you can.

Fomalhaut, loneliest star, near Jupiter and Saturn in 2021

Fomalhaut is known as the “lonely one” or the "solitary one" as it shines brightly in a patch of sky with no other bright stars nearby.

Use Big Dipper to find Polaris in September

Use the famous Big Dipper to find Polaris, the North Star. In September, the Big Dipper is in the northwest in the evening. But watch for it soon!

Explore the Lagoon Nebula, Messier 8

The Lagoon Nebula, or Messier 8, is a large emission nebula in the constellation Sagittarius that observers can explore with binoculars.