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Posts by
Guy Ottewell
Guy Ottewell’s Astronomical Calendar 2024 is here
The popular and information Astronomical Calendar for 2024 by Guy Ottewell is available. It comes in either electronic or printed form. Learn more here.
September 28, 2023
Guy Ottewell asks, is there a smile across the sky?
Guy Ottewell explores and explains the different view of the current objects near the western horizon from the Northern and Southern Hemispheres.
September 16, 2023
Equation of time: Why times vary for your high noon
The difference between apparent solar time (the actual time between noons) and mean solar time (the average time between noons) is called the equation of time.
June 20, 2023
How bright is our sun from other stars?
How bright is our sun from other stars? Famed astronomer Guy Ottewell explores the perspective from Alpha Centauri A, Sirius and Deneb.
June 14, 2023
Comet C/2021 T4 Lemmon is sweeping through southern skies
Comet C/2021 T4 Lemmon was discovered at Mount Lemmon Observatory in 2021. It's currently in the southern skies and might become bright enough for binoculars.
June 4, 2023
How many red dwarf stars in nearby space?
Astronomer Guy Ottewell uses 2 charts - showing 2 different volumes of space - to contemplate and question the density of red dwarf stars in our Milky Way.
May 23, 2023
Artificial intelligence: Thoughts by astronomer Guy Ottewell
Renowned astronomer Guy Ottewell weighs in on artificial intelligence. Plus, apparently what AI says about him isn't accurate.
May 11, 2023
The Drake Equation and the late planet
Astronomer Guy Ottewell discusses how the recent discovery of a star swallowing a late planet can help refine an estimate for part of the Drake Equation.
May 9, 2023
The attitude of the Swan and the Northern Cross
Guy Ottewell answers the question: Since the Northern Cross is vertical as it sets in the west, why is it not also vertical as it rises in the east?
March 17, 2023
How fast is daytime growing? Guy Ottewell explains
How fast is daytime growing? A table in this post shows differences in the time of sunrise as we approach the March equinox.
March 16, 2023
