Buying Guides
-
40+ Space Themed Gifts
Over forty space gift ideas for kids, teens and adults.
-
Best 50mm Telescopes
Small, light starter scopes for the Moon and the brightest planets.
-
Best Telescopes for 10-Year-Olds
Easy, sturdy scopes for kids ten to fourteen who are ready for the real thing.
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
Gravitational lensing happens when matter sits between a distant light source and you, and its gravity bends the light on…
Contents TLDR: which planetarium should you visit? Arkansas has few planetariums, and fewer of them take walk-ins. Here is the…
TLDR Table of contents Canada has a small astronomy community and a long list of results that people outside Canada…
Contents What is a binary star? A binary star is a pair of stars held together by gravity, each orbiting…
A neutron star is the collapsed core of a massive star that blew up as a supernova: about 1.4 times…
TLDR Table of contents What is an ocean planet? An ocean planet is a planet or moon with a global…
An interactive 3D Sun. See today’s real NASA image with NOAA’s sunspot regions pinned on it, then cut it open to explore the core, convection zone, photosphere, chromosphere and corona.
An interactive 3D model of three real comets: Halley, 67P and Tempel 1. Show the coma and tails, add mission sites, watch them spin and compare each nucleus with the Empire State Building.
New content!
There is a new one every day.
-
Recently updated
-
