For the first time, astronomers have spotted a rapidly spinning neutron star that is gravitationally bound to a helium star ...

Astronomers may have discovered a rare type of binary star system, where one star used to orbit inside its partner.

Fluoride can help prevent tooth decay by strengthening the protective outer layer of enamel that’s worn away by acids formed ...

The cerebral cortex forms the outer layer of the cerebrum. Nested deeper within the brain are essential structures such as the basal ganglia, the amygdala, and the hippocampus. Toward the bottom ...

A shell structure has a thin curved outer layer and is hollow. These structures often are used to hold or protect something. They usually have only a small number of joins or no joins at all.

Severe forms of autism could be linked to overgrowth of the brain's outer layer that starts while a baby is in the womb, a new study finds. Toddlers with autism have cerebral cortexes -- often ...