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Posts by
Larry Sessions
Summer Triangle star: Altair is variable and spins fast!
Altair, in the constellation Aquila the Eagle, is one of the closest stars to our solar system. It's variable in an unusual way, and it spins very fast!
July 21, 2026
Summer Triangle star Deneb is distant and luminous
When you gaze at the bright star Deneb, you’re gazing across thousands of light-years of space at one of the bright stars of the huge Summer Triangle asterism.
July 14, 2026
Summer Triangle star: Vega is bright and blue-white
The Summer Triangle star pattern hangs in the east on July and August evenings in the Northern Hemisphere. Its brightest star is blue-white Vega.
July 8, 2026
Top 10 cool things about stars that you probably didn’t know
Here's a collection of 10 cool things about stars that you probably didn't know. Big stars, green stars, black holes, stars by the millions, and more!
July 3, 2026
Massive ruby red Antares is the Scorpion’s Heart
Red Antares, Heart of the Scorpion in the constellation Scorpius, is a massive red supergiant star in the last stages of its lifespan.
June 26, 2026
Top 10 space objects to see during the day
Love astronomy, but don't like to stay up late? Here are the top 10 space objects you can see - under the right conditions - during the day.
June 9, 2026
Meet Mimosa, a star of the Southern Cross
Mimosa is the 2nd-brightest star in Crux, the Southern Cross. It's circumpolar - up all night - from much of the Southern Hemisphere.
May 28, 2026
Spica, the bright beacon of Virgo, is 2 stars
Spica is the brightest star in Virgo and a scorching-hot pair of stars, whirling very closely around one another. One of them may go supernova someday.
May 26, 2026
Meet Regulus, Leo the Lion’s Heart and brightest star
The bright star Regulus in Leo the Lion is prominent in the evening sky in May. It looks like a single point of light, but is really 4 stars.
May 22, 2026
Brightest Stars
Alpha Centauri, the star system closest to our sun
Our closest stellar neighbors are the 3 stars that make up the Alpha Centauri system. They lie just over 4 light-years away from us.
April 17, 2026
