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Visible planets and night sky guide for October
Marcy Curran
October 12, 2026
Clusters Nebulae Galaxies
Check out the Double Cluster in Perseus on October evenings
Bruce McClure
October 11, 2026
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Mercury after sunset and great for Southern Hemisphere!
Editors of EarthSky
October 9, 2026
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Young moon and Mercury from Zimbabwe
The young moon and the planet Mercury adorn the western twilight after sunset on August 16.
Peter Lowenstein
August 18, 2015
Astronomers find teeny supermassive black hole
In a dwarf galaxy 340 million light years away, astronomers have found the smallest black hole ever observed in the center of a galaxy.
Eleanor Imster
August 17, 2015
Cassini’s last close flyby of Saturn moon Dione today
The Cassini spacecraft will zip past Saturn's moon Dione on Monday, August 17 . It will be the spacecraft's final close flyby of this icy satellite.
Eleanor Imster
August 17, 2015
Balanced rocks
"Happiness is not a matter of intensity but of balance, order, rhythm and harmony " - Thomas Merton
Deborah Byrd
August 17, 2015
First digital map of world ocean floor
Scientists have created a new digital map of Earth's seafloor geology.
Editors of EarthSky
August 14, 2015
Milky Way over Paint Mines
Milky Way rising over the Paint Mines Interpretive Park near Calhan, Colorado. Photo by John Skiba.
Eleanor Imster
August 14, 2015
Great Perseid photos here
Have you seen Perseid meteors in your sky? If you have had cloudy skies - or even if not - enjoy these images from all around the world.
Deborah Byrd
August 13, 2015
Charting the slow death of the universe
A study of 200,000 galaxies found they had lost half their energy in just 2 billion years.
Eleanor Imster
August 13, 2015
Three planets and star, from Zimbabwe
A series of photos of Mercury, Venus, Jupiter and the star Regulus in the western evening dusk, August 3-8, by Peter Lowenstein.
Peter Lowenstein
August 13, 2015
Where lightning flashes most
According to satellite observations, more lightning happens over land than over the oceans, and more often closer to the equator. Check out this map.
Editors of EarthSky
August 12, 2015
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