It's actually more hopeless than you realize. Okay, so you just arrived at your destination. Now what, unless this new world was EXACTLY like earth, you will pe

It's actually more hopeless than you realize. Okay, so you just arrived at your destination. Now what, unless this new world was EXACTLY like earth, you will perish relatively quickly. The atmosphere will probably have a different mix of gases. The gravity may be different. The star may not be a type G, so radiation might be a real problem. There might be nothing to eat. Certainly viruses and bacteria of that world would attack the astronauts almost immediately. You would surmise before your death that the journey was not worthwhile.