The Cat’s Eye Nebula holds a special place in scientific history. In 1864, astronomers examining the spectrum of its light ...

518-million-year-old fossil reveals vertebrates once had four eyes and extra organs that later shaped evolution.

According to the data considered by its authors—a team from the University of Sussex (UK) and Lund University ...

Advanced 3D reconstructions of the comb jelly’s aboral organ reveal a sensory system far more complex than scientists expected. The organ contains a wide variety of specialized cells and is closely ...