Beautifully captured by the James Webb Space Telescope (JWST), this image shows interstellar gas and dust lit up by a dead star in Cassiopeia.

The authors also showed that these new, dynamic engineered tissues can synchronize with and accelerate the heart rate when stimulated by light in preclinical models. Read the full story here.

Researchers have shed new light on how a type of heart valve disease -- aortic valve stenosis -- progresses differently in males and females.