1. yes - they don't have the mass for the fuel to get back 2. reentry heating 3. probably not (I think it's the 2nd stage that drops its batteries) 4. because t

1. yes - they don't have the mass for the fuel to get back 2. reentry heating 3. probably not (I think it's the 2nd stage that drops its batteries) 4. because they don't have the mass to do the return they don't have a lot of options