To build a simple cardboard Galilean telescope with a magnification of approximately 9x, your materials will need to have the following specifications: A telescoping mailing tube.

Make this easy cardboard telescope in just a few minutes and have hours of fun with your grandchild. All you need is a clean cardboard toilet roll and maybe some pens to decorate it!

HUNTSVILLE, Alabama – Who wants to see a scale model of the James Webb Space Telescope unfold from the cocoon-like shape in which it will ride to space? Everyone, it seemed Tuesday, from Space ...

Did you know you can build your own telescope? All you need is two lenses and a few common household items.