Jeśli Mars mógł mieć w wczesnym okresie oceany:
https://www.science.org/doi/epdf/10.1126/sciadv.abp8415to mógł posiadać wcześniejszą biotę niż Ziemia, bo ewentualna wczesna biota na Ziemi została zniszczona przez zderzenie z Teją:
The new study indicates that the oceans that covered the entire planet in water were at least 300 metres deep. They may have been up to one kilometre deep. In comparison, there is actually very little water on Earth, explains Martin Bizzarro.
"This happened within Mars's first 100 million years. After this period, something catastrophic happened for potential life on Earth. It is believed that there was a gigantic collision between the Earth and another Mars-sized planet. It was an energetic collision that formed the Earth-Moon system and, as the same time, wiped out all potential life on Earth," says Martin Bizzarro.
Therefore, the researchers have really strong evidence that conditions allowing the emergence of life were present on Mars long before Earth.https://www.marsdaily.com/reports/The_first_life_in_our_solar_system_may_have_been_on_Mars_999.html