Putting together your DIY telescope requires attaching the objective lens at one end of your cardboard tube and inserting the ...

The best telescopes for kids make great Christmas gifts. Our favorite models will provide good, frustration-free night sky views and are perfect for budding skywatchers. If your child is ...

[Styropyro’s] handheld, DIY laser rifle, or Laser Telescope Blaster as he calls it, works for long distances. His solution lies in some surprising physics: the larger the diameter of the beam ...