There's no way to slow down, true. Let's see... Neptune's orbital diameter 8.3 light hours. At 10% c (speed of light) you would need 83 hours. Yes, insane spe

There's no way to slow down, true. Let's see... Neptune's orbital diameter 8.3 light hours. At 10% c (speed of light) you would need 83 hours. Yes, insane speed, yet hopefully enough time to take quite a few pictures. Also the plan is not to send a single "disc", but many (thousands?). Together they could potentially provide a treasure trove of data from within the alien solar system.