Saturday, June 16, 2007
हर रोज़ एक नया प्लेनेट See A New Planet Everyday
There are about 200 billion stars in our Milky Way galaxy. Over the next million years our descendents will spread among the stars in an exponential explosion of life, remaking the galaxy as surely as life has remolded Earth in its own image.
Let's be conservative, and assume that only one star in 100 has a planet capable of being made into a habitable world, and that only star systems with such planets are ever occupied. That means 2 billion barren planets upon which to sow the seeds of life, or 2000 per year for the next million years--about five a day. Life grows geometrically, so the rate of expansion will be slow at first but will inexorably compound into a spherical wavefront of life propagating outward at a substantial fraction of the speed of light. As the settlement of the galaxy builds toward the crescendo, there will come a time when a new habitable planet is created every day, then even faster until the galaxy is everywhere alive. And, if our distant descendants are no more imaginative than we, about 75% will be probably named "New Earth": Terranova.
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