Here's a thorny problem: What if life doesn't always appear on planets that can support it? What if we find…
Can life spread throughout a galaxy like the Milky Way without technological intervention? That question is largely unanswered. A new…
A new study suggests that comets and asteroids that graze Earth's atmosphere might be responsible for the spread of life…
A new study from the Harvard-Smithsonian Center for Astrophysics addresses the possibility of panspermia on a galactic (and intergalactic) scale