Category Archives: Astronomy

Something very humbling is out there

On a dark, clear night, if you walk far away from the city lights, you will be probably able to see a magnificent strike of light we call “the milky way”, our galaxy. It looks like this:
Our sun is a small, insignificant star, sitting on one of the arms of this magnificent spiral of stars [...]

The scale of things

This is a very interesting application that should convey you an idea of the size of small things: from a coffee bean down to a small carbon atom. It pairs with this movie about the size of planets and stars. Fascinating and humbling.

Where are they?

I found a very interesting commentary by Nick Bostrom, about the existence of extraterrestrial life and the so-called Fermi Paradox.
The point Nick Bostrom presents is sensible: the current evidence is that life is apparently not very frequent in the Universe. Despite all efforts we did toward finding life, intelligent or not, we failed. Moreover, the [...]

Age of the universe

According to recent results from WMAP, the universe is 13.73 ± 0.12 billion years old. Moreover, the ordinary matter accounts less than 5% of the constituents of the universe (energy and matter), and the universe is practically flat, in the sense that the geometrical rules are those of an euclidean geometry.
This seems to provide even [...]

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