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The editors of Sky & Telescope make every effort to provide accurate information, but errors do sometimes slip through. We correct all mistakes online as well as printing corrections in the magazine. So if you see something questionable in the magazine, check below to see if it's a known problem.
This article lists all known errors in issues of Sky & Telescope for 2025. See also the errata listings for other years.
March 2025
Page 18: In the diagram on page 18 of the March issue, the red arrows in the lower-right (southern) Hadley and Ferrell cells should be blue and vice versa. The direction of the blue arrows in the lower-right polar cell should be reversed. See below for the corrected diagram.
Page 53: In T. E. R. Phillips’s pastel drawing of Mars, Syrtis Major had just emerged on the morning limb at left, and the orographic clouds above Elysium appear just to the right of center.
Page 55: The spiral galaxy M65 is 40 million light-years from Earth, not 40 light-years as stated in "The Legs of the Lion."
Page 62: In the chart, the topmost layer of clouds should be labeled CH4 (methane), not CH2.
April 2025
Page 16: The Witch Head Nebula (IC 2118), though illuminated by Rigel, is actually in Eridanus, not Orion.
May 2025
Page 33: The high-resolution view of galaxy cluster Abell 426 is 31½ arcminutes across, not arcseconds.
Page 68: The weight of iOptron’s HAE16C Hybrid Mount is incorrect. The equatorial head weighs 2.6 kg (5.7 lbs).
August 2025
Page 8: If dark energy were constant, the universe would continue to expand at an increasing rate. The “Big Rip” mentioned in “New Data Hint at Changing Dark Energy” would only occur if the density of dark energy was increasing over time.
December 2025
Page 10: In “Some TESS Planets Bigger Than Thought,” the stars appear larger than they are, thus leading to an underestimate of the planet’s size. See the original article at https://is.gd/BiggerPlanets.
Page 68: In the Test Report of the Sky-Watcher Heliostar 76, the filter bandpass is 0.05 nanometer, or 0.5 angstrom, not 0.5 nanometer.
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