Sirius

Astronomy - Intermediate

Distance in light-years and radius.

1400 years ago people knew the brightest star in the night sky, Sirius, however nobody knew the distance to this star. Sirius is mentioned in the Quran by name in chapter "The Star".


Quran 53:49

And that it is He who is the Lord of Sirius.


٤٩ وَأَنَّهُ هُوَ رَبُّ الشِّعْرَىٰ


Getting distance to Sirius from Google.

Sirius is 8.61 light-years away from Earth.

Converting to short-range scale. From www.convertunits.com:

8.61 light-years is equivalent to 861 centi light-years. So distance to Sirius is 861 centi light-years. It turned out that between the word "Star" in the first verse and the word "Earth" in verse 32 there are 861 letters.

286099 - 285238 = 861

The word "Star" and word "Earth" are separated by 861 letters. Today we know that Sirius is 861 centi light-years away from Earth.

How could an illiterate man who lived 1400 years ago have known the distance to Sirius?

The radius of Sirius is 1.711 times the radius of the sun.

Sirius A, the visible star of the binary, has a radius of 1.711 R☉. This is 1.711 times the radius of the sun. This ratio "1.711" turned-out to be the same ratio of chapter "the sun" / chapter "The star" = 91/53 = 1.71698113208

How could an illiterate man who lived 1400 years ago have known the radius of Sirius?

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