September 9, 2024
Given the vast number of stars in the universe and the probability of habitable planets, why is there no evidence of extraterrestrial life?
What is the nature of dark matter, the invisible substance that makes up about 85% of the universe's matter?
What is dark energy, the mysterious force causing the universe to accelerate in its expansion?
How did life on Earth begin from non-living matter?
Will the universe continue to expand forever, eventually becoming a cold, dark void? Or will it collapse back in on itself in a "Big Crunch"?