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Posts by Larry Sessions

alpha-beta-centauri-southern-cross
Tonight | Apr 27, 2016

Star of the week: Hadar is a southern pointer star

Hadar, aka Beta Centauri, joins Alpha Centauri in pointing to the Southern Cross. It’s a triple system. Two of its stars will someday become nearby supernovae.

Artist's concept of Spica from hypothetical planet
Science Wire | Apr 23, 2016

Spica is a whirling double star

Spica is a binary star, with two stars larger and hotter than the sun, telescopically indistinguishable from a single point of light.

Crab Nebula
Blogs | Apr 23, 2016

Crab Nebula was an exploding star

The Crab Nebula, located some 6,500 light years from Earth, marks the remains of a massive star observed to explode as a supernova in AD 1054.

Image via New Scientist
Science Wire | Apr 19, 2016

10 surprises about our solar system

A collection of 10 unexpected and intriguing facts about our solar system – our sun and its family of planets – you probably did not know!

2016-april-moon-castor-pollux-procyon
Tonight | Apr 13, 2016

Moon near Gemini stars on April 13

Tonight’s moon is approaching stars Castor and Pollux in the constellation Gemini the Twins. Pollux is brighter and golden in color. Castor is pure white.

Coma Cluster of galaxies by Justin Ng.
Science Wire | Apr 06, 2016

Coma Cluster of galaxies

The Coma Cluster is one of the richest galaxy clusters known. How many suns and how many worlds might be located in this direction of space?

You need a dark sky to appreciate the constellation Coma Berenices.  If you have one ... it's very beautiful.
Tonight | Apr 06, 2016

Leo loses his tail. We gain a constellation

A clump of faint stars trailing the constellation Leo once represented the Lion’s tail – but now these stars are known as Coma Berenices, the hair of a queen.

Constellation Crux photo by Christopher J Picking in New Zealand.  More information about this photo here.  Used with permission
Science Wire | Mar 30, 2016

Mimosa is second-brightest in Southern Cross

You need to be at the latitude of New Orleans, Cairo or New Delhi to glimpse it. From the southern hemisphere, Mimosa is a prominent and beloved star.

2016-march-28-moon-mars-saturn-antares
Tonight | Mar 28, 2016

Moon, Saturn, Mars on March 28-29

Did you see these planets late Sunday night or Monday morning? Tonight, you’ll see the moon closer to Saturn. Bright Antares is nearby.

Constellation Crux photo by Christopher J Picking in New Zealand.  More information about this photo here.  Used with permission
Science Wire | Mar 24, 2016

Acrux, brightest star in Southern Cross

You have to be in the Southern Hemisphere to see Crux – the Southern
Cross – in all its glory. Bluish Acrux, aka Alpha Crucis, is its brightest star.