Buying Guides
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Best Eyepieces for Dobsonians
Eyepieces matched to the fast focal ratios of Dobsonian telescopes.
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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 Binoviewers
Look through your telescope with both eyes for sharper, more relaxed views.
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
Did you know that on average, Mercury is really the closest planet to Earth? Despite not being our neighboring planet…
You might have heard that Venus is sometimes referred to as “Earth’s twin”. This is because, despite their very different…
Surely you have seen the images of the astronauts of the Apollo missions in the 1960s and 70s where they…
Mars is approximately half the size of Earth. This means that its gravity pull is much weaker and as a…
Dwarf planets are a very controversial category of celestial objects since 2006 when Pluto was “demoted” from being a planet…
A grand total of 46 different spacecraft have been launched with the mission of exploring Venus. Being one of our…
Mars and Saturn are by far the two most popular planets that people like to see with a telescope. Mars…
It is mind-boggling to try to think how big some galaxies are. Our own galaxy, the Milky Way is about…
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