Buying Guides
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Space Coffee Table Books
Six big, beautiful space books to leave out for guests.
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Budget Telescopes That Are Sneakily Powerful
Five low-cost scopes that perform well above their price.
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Best Eyepieces for Dobsonians
Eyepieces matched to the fast focal ratios of Dobsonian telescopes.
Free Resources
Space Printables
Free PDF quizzes and worksheets for kindergarten to adult, with answer keys.
3D Space Models
Spin real maps of the Moon and planets built from NASA data. Find craters, landing sites, the rings of Saturn, Uranus and Neptune and the moons of Jupiter.
Latest
TLDR Table of Contents What makes a star’s planets habitable? A planet counts as potentially habitable when it orbits inside…
Utah has one full-scale public planetarium, one tiny campus dome that hosts free evening shows, and one mobile dome that…
Denmark has one astronaut who has flown: Andreas Mogensen. He was the first Dane in space in 2015, and in…
Most articles about Chinese astronomy are really articles about instruments, dynasties, and star catalogues — the field, not the people…
TLDR “Stars named after animals” is really three different questions people mash together. Individual stars have animal nicknames (Sirius is…
TLDR May has quietly produced one of the densest clusters of astronaut birthdays on the calendar — Sally Ride, Scott…
TLDR Kansas has exactly three public planetariums: the Justice Planetarium inside the Cosmosphere in Hutchinson, the L. Russell Kelce Planetarium…
On July 20, 1976, a three-legged robot with a robotic arm and a set of miniature chemistry ovens touched down…
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