Science

Monday, 23 February 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Cosmos
It is difficult to estimate the approximate number of stars in space.
According to the simples calculation taking into account the number of galaxies and the average numb ...
Moon
Selenographic coordinates are used to determine coordinates on the lunar surface.
Ganymede
The surface of Ganymede is geologically very diverse.
On its surface, there are both geologically young areas and much older, darker, and covered with many craters.
Milky Way
A galactic year is the period during which the Sun orbits the center of the galaxy.
It lasts about 230 - 240 million years. The solar system moves around the center of the Milky Way at an average speed of 230 km/s (828,000 km/h).
Earth
It is similar with the oceans - depending on the divisions, there are from three to five of them.
We distinguish oceans: Pacific, Atlantic, Indian, Southern, and Arctic. The basic ones are considere ...
Cosmos
Each object in the sky is observed with a delay.
The farther away the celestial body is from the observer, the longer the light emitted or reflected ...
Titan
Most of the dunes are located near the equator.
They stretch for hundreds of kilometers, and their height reaches 100 meters. Unlike Earth’s, Titan’s dunes are made of organic compounds.
Brain
The brain generates up to 80,000 thoughts a day.
That's over 3,000 thoughts per hour.
Earth
The Earth formed from a proto-planetary disk around the Sun about 4.54 billion years ago.
For its first billion years, it was a hostile, harsh, rocky place where life did not exist. According to research, the first living organisms appeared in Earth's oceans about 3.5 billion years ago.
Aurora
Auroras are not only present on our planet.
They were observed on all the giant planets in the solar system: Jupiter, Saturn, Uranus and Neptune.