Science

Tears are primarily made of water.

Anorexia is considered a disease of psychological origin.

Amber has been used as a medicine.

There are two types of auroras: northern - Aurora Borealis, and southern - Aurora Australis.

The Earth's atmosphere consists of many gases, most of which is nitrogen.

Once mushrooms were included in the world of plants, a group of Thallophytes.

The diameter of the Large Magellanic Cloud is approximately 14.000 light years.

After the first period of rapid expansion, the universe began to cool.

It has been used in jewelry since 13,000 BC.

Phobos craters are named after astronomers who contributed to the study of the moon, and characters and locations from Jonathan Swift's “Gulliver’s Travels.”