We asked readers to share the items they’ve held on to as reminders of love. The responses ranged from uplifting and funny to heartachingly sad. Share full article Many of the keepsakes that readers ...

Matteo Paz, a student at Pasadena High School, joined the Planet Finder Academy in the summer of 2022. The program immerses students in real world astronomy challenges. Under the mentorship of Caltech ...

Metamorphopsia distorts central vision, making straight lines look wavy and flat objects look rounded. It happens when the retina or macula is damaged by disease, injury, or aging. Common causes ...

Compact objects are compact stellar remnants, such as white dwarfs, neutron stars and black holes and specific types of these objects (e.g., pulsars and boson stars), as well as their larger ...