This article lists all known errors in issues of Sky & Telescope for 2018. See also the errata listings for previous years.
Page 26: The bottom panel in the illustration showing the evolution of stellar interiors has an incorrect label. "He→H" should be "He→C", as shown at right.
Page 49: The events listed in the table for the total lunar eclipse are given in standard (not daylight) time.
Page 49: Rayleigh scattering of sunlight by air molecules (not refraction) produces colorful sunrises and sunsets on Earth.
Page 19: The discussion of returning a 2006 balloon-borne experiment to Earth should note that engineers had to send a second radio signal to separate the parachute from the payload (not the balloon) once it had landed.
Page 37: In the caption below the Periodic Table of Cosmic Origins, promethium should be identified as Pm (not Pc).
Page 24: The 24°×24° field of view of the TESS cameras is equivalent to the area covered by nearly 2,100 (not 50) full Moons.
Page 53: The images of Venus (bottom caption) were obtained using a filter that transmitted wavelengths longer than (not at) 610 nm.
Page 68: Due to a production error, the AARP ad was mistakenly glued onto an editorial page.
Page 7: In 75, 50 & 25 Years Ago, it was Mr. Hughes, not Hodges, who lost the court case for ownership of the Willamette meteorite.
Page 25: Polaris is, of course, Alpha Ursae Minoris (correct in the table).