What is the "Rare Earth Hypothesis"?

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The inevitable question of "are we alone in the universe?" is destined to be raised now that the James Webb Telescope is operating and spitting out magnificent photos. [{ "selector": ".ettul-a", "duration": "500ms", "fill": "forwards", "delay": "1500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

Science does not yet have a clear answer; experts disagree on whether Earth and its solar system are really unique in the expanse of space, or simply another ordinary rock in an average solar system. [{ "selector": ".siwpz-a", "duration": "500ms", "fill": "forwards", "delay": "1500ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

Why Complex Life is Uncommon in the Universe" by palaeontologist Peter Ward and astronomer Donald Brownlee was originally published in 2000. [{ "selector": ".kgpon-a", "duration": "500ms", "fill": "forwards", "delay": "1000ms", "keyframes": [ {"offset": 0, "opacity": 0}, {"offset": 1, "opacity": "1"} ] }]

One of the theories put up by these researchers is the idea that sophisticated life on Earth could only have arisen because of a unique combination of cosmic events that occurred only a small number of times.

There's also Carl Sagan, the famous scientist who died in 1997. (the Neil deGrasse Tyson of his time).

A "normal planet system" to Sagan, which included Earth, was merely another "rocky planet." He also believed in the existence of life on other planets.