Här är varför:
* Mars: While Mars is the closest candidate, it lacks a substantial atmosphere and a global magnetic field, leaving it exposed to harsh solar radiation. Its surface water is mostly frozen, and temperatures are extremely cold.
* Venus: Venus has a thick, toxic atmosphere with runaway greenhouse effect, leading to surface temperatures hot enough to melt lead.
* kvicksilver: Mercury is extremely close to the sun, making it incredibly hot and lacking any significant atmosphere.
* Yttre planeter: The gas giants Jupiter, Saturn, Uranus, and Neptune have no solid surface and are composed primarily of gas. Their moons are mostly too small and cold to support life as we know it.
Även om vi inte har hittat några bebodda planeter inom vårt solsystem, fortsätter sökandet efter livet bortom jorden med uppdrag som utforskar Mars, Europa (en måne av Jupiter) och andra lovande himmelkroppar.
