Because the Scriptures say that no murderer has eternal life abiding in him, we need not conclude that a murderer cannot be saved. He can be if he will come to Christ and receive Him as Savior.
I realized up there that our planet is not infinite. It's fragile. That may not be obvious to a lot of folks, and it's tough that people are fighting each other here on Earth instead of trying to get together and live on this planet. We look pretty vulnerable in the darkness of space.