TStark Planets

planets.js

let ourPlanet = 'moon';

// For the below, when JS is 'reading' (aka parsing) this line, it reads it like this: 
// if ourPlanet equals 'Moon' OR if there's a string 'moon' that exists. 
// What you really want to tell it is- if our planet equals "Moon" OR if our planet equals "moon" THEN... do something.
if (ourPlanet === "Moon" || "moon") console.log('No, that\'s not a planet! Try again!'); // You need to wrap the 'then' statement in curly brackets. if (something) ->{do something}<- else if (something) {do something}.
else if (ourPlanet === "Sun" && /* ourPlanet === */ "sun") console.log('No, that\'s not a planet, but it\'s also called a star! Try again!');
else if (ourPlanet === "Venus" && "venus") console.log('Nope,you\'re wrong! Try again!');
else if (ourPlanet === "Mars" && "mars") console.log('No, that\'s not the correct answer! Guess again!');
else if (ourPlanet === "Pluto" && "pluto") console.log('Incorrect answer! It\'s a Dwarf Planet Guess again!');
else if (ourPlanet === "Uranus" && "uranus") console.log('Nope, this planet is the 7th one from the sum! Almost there!');
else if (ourPlanet === "Saturn" && "saturn") console.log('No! Guess again!');
else if (ourPlanet === "Earth" && "earth") console.log('Yes, that\'s not the correct answer! We are all on earth, living and breathing!');
else console.log('Research the planets!'); 

my question was why does this not work:
if (ourPlanet === "Moon" && "moon") console.log("No, that\'s not a planet! Try again!")

but this does work:
if (ourPlanet === "Moon" || "moon") console.log("No, that\'s not a planet! Try again!")

Technically, neither is correct because you didn't wrap the 'then' statement (you're writing if/then statements) in curly brackets.

Here's what I would have written:
if (ourPlanet === 'Moon' || ourPlanet === 'moon') {console.log('No, that\s not a planet! Try again!')};

You'll see that for the if the statement, I broke it out into two expressions. JS doesn't 'understand' what you're comparing when you do it your way. Technically your if statement was: 'if ourplanet equals 'Moon' or if there's a string that exists called 'moon''

You need to tell it that its looking at the ourPlanet variable to see if it equals "Moon" or if it equals "moon". Get it?