Of particular interest to astronomers is the nebula's faint, Venn-diagram-like structure — two rings of ejected material shaped by the gravitational influence of the central stars. Scientists ...

It is between the urethra, where urine leaves the body, and the anus. The clitoris is one of the most sensitive body parts of a person with a vagina. When stimulated, it may provide erotic ...

More than 100 years ago, in 1905, Walther Nernst discovered the Third Law of Thermodynamics, thus completing this fundamental theory. In 1920 he was awarded the Nobel Prize in Chemistry. The book ...

The skeletal system comprises 206 bones and has two main parts: the axial skeleton and the appendicular skeleton. The skeletal system includes your bones, ligaments that attach bone to bone, and ...

Your penis and scrotum are the two parts of the male (or what’s typically called male) external sex anatomy (outside your body). Your penis is made of 3 layers of spongy tissue. When you get turned on ...

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