Learn what different shades of blood mean and how they signal changes in your health or potential medical issues.

The color of a person’s period blood ... Healthy period blood typically varies from bright red to dark brown or black. Blood or discharge that is orange or gray may indicate an infection.

If you were up really early this morning and under clear skies, you might have been among those seeing the full moon pass through Earth’s shadow, turning it a dark red-orange. The celestial show ...

"In a total lunar eclipse, the entire moon falls within the darkest part of Earth’s shadow, called the umbra. When the moon ...