7 mind-bending comparisons between the Universe and the human body
Our observable Universe is enormous compared to a human: over 10²⁶ times as large. This horizontally-oriented logarithmic map of the Universe shows how, from left-to-right, we go from Earth-sized scales to the largest cosmic distances of all. As spectacular as this logarithmic view is, it “only” spans about 20 orders of magnitude: from the size of the Earth to the size of the present-day cosmic…
The observable universe is mind-bogglingly vast, over 10²⁶ times larger than our planet Earth. For perspective, a human scale is merely 7,000,000 times smaller than that of Earth. Atoms comprise the fundamental building blocks of both the universe and the human body. The human body, however, primarily consists of only four elements: oxygen, carbon, hydrogen, and nitrogen, with over 70 types of atoms in total.
Human cells outnumber the total number of galaxies in the observable universe. Approximately 30-40 trillion cells make up the human body, of which half are human cells. In contrast, only around 1000 stars, totaling around 175 solar masses, are present in the dwarf galaxies Segue 1 and Segue 3. Yet, these dwarf galaxies still have a gravitational mass equivalent to 600,000 Suns.
Each day, our bodies undergo a cellular turnover equivalent to the number of stars in the Triangulum galaxy. This process of apoptosis, where cells are regularly destroyed to make way for new, healthy ones, contributes to the constant renewal of our bodies. The brain, an intricate network of approximately 86 billion neurons, is responsible for producing consciousness. This miraculous organ, fed by blood vessels and surrounded by protective layers, remains a mystery in terms of understanding its role in consciousness.
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