137 billion years since the birth of the universe-Big Bang.
A duration that can be called eternal. In comparison, human life is so short and ephemeral.
The number of stars existing in the universe.
Just within the "Milky Way Galaxy" to which our "Solar System" belongs, there are 200 billion stars.
Moreover, in the universe, there are over 2 trillion such galaxies.
It's a world completely different from our daily lives.
However, we too are residents of such a "universe." It's truly amazing.
When we look up at the night sky, among the shining lights, there is the light of stars from a distance of 16,000 light-years.
It's a star in the constellation Cassiopeia. The farthest star visible to the naked eye. Its light was emitted during the Japanese Jomon period.
If we compare the light of a single star to the light of a "nebula" where many stars have gathered, we can see even farther light with the naked eye.
The farthest nebula of this kind is the Andromeda Galaxy, located 2 million light-years away.
Its light was emitted when our ancestors, "modern humans," were journeying through Africa.
Light that reaches us after the passage of endless time. What romance.
This too, thanks to being born into this world.
When tired and disheartened by daily life, let's try to remember that we are living in the "eternal time of the boundless universe."
It might bring some relief to our minds.
