A stunning new image from the James Webb Space Telescope (JWST) is allowing astronomers to examine the complex and turbulent final stages of a dying star's life.

Engineers and astronomers at the University of Utah have designed a unique new kind of telescope lens: a flat lens with microscopic etchings to refract light. If the concept can be scaled up ...

Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object ...

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

Credit: NASA, ESA, CSA, STScI, Michael Ressler (NASA-JPL), Dave Jones (IAC) A stunning new image from the James Webb Space Telescope (JWST ... nebula's faint, Venn-diagram-like structure ...