Buying Guides
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Best Telescopes Under $100
The cheap scopes that are worth buying, and the ones to skip.
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Best Telescopes Under $200
Where budget scopes start showing planets and bright galaxies well.
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Best Telescopes for Viewing Planets
Scopes that show Saturn's rings, Jupiter's bands and the Martian poles.
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
The Sun affects Earth in two ways. Its steady light and heat drive photosynthesis, weather, ocean currents, day and night,…
Montana has two planetariums that open to the public on a regular schedule: the Taylor Planetarium in Bozeman and the…
Iowa has eight observatories where an ordinary person can walk up and look through a real telescope. Some are free…
The Ptolemaic constellations are the 48 star patterns catalogued by the astronomer Claudius Ptolemy in the Almagest, around 150 CE.…
Answer 10 quick questions to find out which moon matches your personality. There are 12 possible results, each with real moon facts.
Answer 10 quick questions to find out which star matches your personality. There are 12 possible results, each with real star facts.
Answer 10 quick questions to find out which constellation matches your personality, or look up your birth constellation by birthday.
Answer 10 quick questions to find out which planet matches your personality. There are 9 possible results, each with real planet facts.
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