Science

We define the shape of the galaxy as a Magellanic spiral galaxy.

The Milky Way is a barred spiral galaxy of type SBbc.

Tears are made up of three layers.

There are many theories about the formation of the Moon, but the most probable is that in the early days of the Solar System, the proto-Earth collided with a celestial body the size of Mars, and this impact generated enough energy to throw enough material into Earth's orbit to form the Moon.

In 1973 NASA launched the Skylab mission.

Phobos is believed to be an asteroid that has been intercepted by the gravitational field of Mars.

The first probe near Titan was Voyager 1.

The name nicotine comes from the name of the French physician Jean Nicot, who recommended tobacco as a medicine in the 16th century.

Amber was used for incense.

Due to its bactericidal properties, silver is also used in the textile industry.