Probably the standard is to maintain the ecosystem, currently there are many species that will go extinct, the ecosystem is out of balance. Our understanding o

Probably the standard is to maintain the ecosystem, currently there are many species that will go extinct, the ecosystem is out of balance. Our understanding of travel through space is limited by our understanding of the universe, a century ago nobody believed that we will land on the moon. A few centuries ago we used horsemen to send messages, now we use radio waves, maybe also radio is something primitive to advanced civilizations, who knows what we will discover, quantum entanglement for example looks promising.