discussing the count of a large number of objects, such as stars in the Observable Universe, the focus is not on calculating their literal quantity down to the last star. In such cases, understanding the order of magnitude is sufficient. It is considered that the number of stars in the Observable Universe is a figure with 22 digits, which is more conveniently represented as one followed by 21 zeros and written as 10 to the power of 21.

Moreover, this is a lower estimate. This means that there could be

as few as

or as many as

1 000 000 000 000 000 000 000,

9 999 999 999 999 999 999 999

A trillion seconds ago, mammoths roamed the Earth. In the planet's oceans, there are approximately a trillion fish, and in the neighboring Andromeda galaxy, there are about a trillion stars. Meanwhile, the human body consists of several tens of trillions of cells.

If we take a trillion bacteria, they would occupy the volume of a sugar cube. However, a handful of a trillion atoms is not even visible to the naked eye.

A trillion kilometers is the distance light travels in a little over a month in a vacuum. The distance to the nearest star, Proxima Centauri, is 42 trillion kilometers.

Counting to a trillion is impossible; it would take 32 thousand years to accomplish that.

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