Objects - For loops and correct syntax

let spaceship = {
    crew: {
    captain: {
        name: 'Lily',
        degree: 'Computer Engineering',
        cheerTeam() { console.log('You got this!') }
        },
    'chief officer': {
        name: 'Dan',
        degree: 'Aerospace Engineering',
        agree() { console.log('I agree, captain!') }
        },
    medic: {
        name: 'Clementine',
        degree: 'Physics',
        announce() { console.log(`Jets on!`) } },
    translator: {
        name: 'Shauna',
        degree: 'Conservation Science',
        powerFuel() { console.log('The tank is full!') }
        }
    }
};

// CORRECT
for(let crewMember in spaceship.crew){
    console.log(`${crewMember}: ${spaceship.crew[crewMember].name}`);
}

//WRONG
for(let crewMember in spaceship.crew){
    console.log(`${crewMember}: ${crewMember.name}`);
}

// CORRECT
for(let crewMember in spaceship.crew){
    console.log(`${spaceship.crew[crewMember].name}: ${spaceship.crew[crewMember].degree}`);
}

// WRONG
for(let crewMember in spaceship.crew){
    console.log(`${crewMember.name}: ${crewMember.degree}`);
}