Wide-field telescopes and eyepieces are best for viewing large nebulae. Dark skies and high altitudes improve visibility. Planning your observations, including target selection and timing, is crucial.

Researchers have developed an ultra-thin 3D display with a wide viewing angle, clear image quality and vivid display depth.

For a while, the 2-megapixel camera was the most pointless, least-liked addition to a new smartphone’s camera system — but it’s time to redirect our ire in a new direction. Our collective Paddington ...