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Posts by Larry Sessions

Stars. Image via NASA
Science Wire | May 24, 2016

Top 10 cool things about stars

Here’s a collection of 10 unexpected, intriguing facts about the stars of our universe – including our sun – that you probably didn’t know!

Alpha Centauri
Tonight | May 19, 2016

Star of the week: Alpha Centauri, closest star system to our sun

Third star in the system, a red dwarf called Proxima Centauri, is our sun’s closest neighbor at about 4.22 light-years.

Artist's concept of the star Arcturus
Tonight | May 11, 2016

Arcturus cuts through galaxy’s disk

Arcturus is cutting perpendicularly through the galactic disk at a tremendous rate of speed – some 150 kilometers per second.

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

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.