In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

Breast density refers to the amount of fibroglandular tissue in the breast; it has nothing to do with how firm your breasts feel, nor how they look when you take off your bra. BreastScreen Australia ...

Osteoporosis is a bone disease that’s common in the United States, affecting almost 20 percent of women and 5 percent of men over age 50. Osteoporosis occurs when bones are weakened by hormone shifts ...

When Debra cracked both a tooth and a bone in her foot in the same year, she thought something was not right. But it wasn't until she sought help from her doctor for brain fog and tiredness due to ...

Jen Psaki rips White House over defense of Jared Kushner’s conflict of interest What does '6-7' mean? Here's why kids are saying 'six, seven' over and over. Jay Cutler released early from Tennessee ...

Density is a fundamental concept in chemistry that describes the relationship between mass and volume of a substance. This video offers a thorough explanation of density, its significance, and how to ...

Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...

If you’re someone who’s at risk for developing osteoporosis, you’re probably well-accustomed to receiving regular bone density tests. Dual-energy X-ray absorptiometry (DEXA or DXA) is a radiologic ...

How do astronomers describe the shape of the universe, and what could it mean for the fate of the cosmos? When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...