Martian Spores: How Life Could Have Flown to Earth ⚡ экспресс
Panspermia models have broadened the study of life's origin on Earth, allowing for the transfer of early life forms between planets. In the past, Mars likely had conditions suitable for life, making the question of interplanetary transfer of life from Mars to Earth in the late Hadean highly relevant. Spore-forming bacteria are ideal candidates for such research due to their resistance to extreme conditions. The study conducted biological experiments in which endospores, shielded by a lysed bacterial colony, were exposed to prolonged UV radiation under different rotation modes simulating the varying rotation periods of ejected material. Astrophysical modeling using n-body simulations of particles ejected from Mars at perihelion and aphelion showed that Martian debris can reach Earth in just a few years, and with an ideal ejection — in less than a year. The combined data confirms: interplanetary transfer of biologically viable material from Mars to Earth is possible under favorable conditions.
The idea of extraterrestrial origin of life has long excited minds. Fred Hoyle believed bacteria travel between stars. A new study tested a similar but closer route: from Mars to Earth. In ancient times, Mars had water, and asteroid impacts knocked rocks with microbes into space. They fell on our planet — interplanetary delivery without a sender.
In the lab, spores (nature's nanocapsules) were covered with a layer of dead cells, creating a protective shield, and exposed to harsh solar ultraviolet — hundreds of times stronger than on Earth. Even with the rock rotating, many survived. And calculations showed that such a rocky container reaches Earth in a year — faster than Magellan circumnavigated the globe.
This doesn’t prove life came from Mars, but it confirms: carbon building blocks of life can travel inside cosmic dust. Interplanetary mail works.
🎯 Among meteorites on Earth, there are fragments of Mars — pieces of crust knocked off by asteroid impacts and delivered straight to us.