A newly discovered cluster-scale strong gravitational lens, with a rare alignment of seven background lensed galaxies, provides a unique opportunity to study cosmology. In a rare and extraordinary ...
From the fall of an apple to the glow of the farthest known star, gravity quietly choreographs almost everything that happens ...
KnowHOW team explains: A magnifying glass is a convex lens ? both its surfaces are curved outward. When light ray passes through such a lens, having arrived along a direction parallel to its axis, ...
Astronomers at the University of Chicago, MIT and elsewhere have used a massive cluster of galaxies as an X-ray magnifying glass to peer back in time, to nearly 9.4 billion years ago. In the process, ...
A double-convex lens is compose of two convex surfaces, has a positive focal length. Normally Bi-Convex lenses are most suitable where the object and image are on opposite sides of the lens, and are ...