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HTML 

              
                <html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  <header>
    <div class="introSolar">Solar System</div>
  </header>
  
  <section id="mainSolarSystem">
    <div class="MainSolarSystem">
      <img id="imgSun" class="sunResize" src="https://res.cloudinary.com/djohzk4di/image/upload/v1530863986/sun-min.png" alt="sun">
      
      <div class="orbit-position">
        <div id="imgMercury" class="orbit-view-Ring ringMercury">
          <div id="mercury" class="animate-mercury">
            <img class="mercuryResize" src="https://res.cloudinary.com/djohzk4di/image/upload/v1530864073/mercury-min.png" alt="mercury">
          </div>
        </div>
      </div>
      
      <div class="orbit-position">
        <div id="imgVenus" class="orbit-view-Ring ringVenus">
          <div id="venus" class="animate-venus">
            <img  class="venusResize" src="https://res.cloudinary.com/djohzk4di/image/upload/v1530864057/venus-min.png" alt="venus">
          </div>
        </div>
      </div>
      
      <div class="orbit-position">
        <div id="imgEarth" class="orbit-view-Ring ringEarth">
          <div id="earth" class="animate-earth">
            <img  class="earthResize" src="https://res.cloudinary.com/djohzk4di/image/upload/v1530864036/earth-min.png" alt="earth">
          </div>
        </div>
      </div>
      
<!--       <div class="mars"><img src="https://res.cloudinary.com/djohzk4di/image/upload/v1530864021/mars-min.png" alt="mars" class="resize"></div> -->
    
    </div>
  
      <div class="click-animate-arrow"></div>
      <div class="info-container">
        <div id="planetTitle"></div>
        <div id="planetDetails"></div>
      </div>
  
  </section>
  
  <footer>
    <div class="created">
      created by Brian van vlymen
    </div>
  </footer>
</body>
</html>
!

CSS 

              
                *{
  margin: 0;
  padding: 0;
}

header{
  display:flex;
  height: 50px;
  width: 100%;
  background: lightblue;
  justify-content:center;
  align-items: center;
}
.introSolar{
  font-size:2rem;
}
#mainSolarSystem{
  display: flex;
  justify-content: center;
  flex-flow: row wrap;
  align-items: center;
}
.MainSolarSystem{
  display:flex;
  justify-content:center;
  align-items:center;
  background: black;
  height:400px;
  width: 500px;
  margin-left:-209px;
}
.sunResize{
  width:100px;
  height:100px;
  z-index:5;
  cursor:pointer;
  border-radius:50%;
  transition: background 1s ease;
}
.sunResize:hover, .ringMercury:hover, .ringVenus:hover, .ringEarth:hover{
/*   background:#827e7e; */
  background: lightblue;
  cursor:pointer;
}
.orbit-position {
  position: absolute;
/*     transform: translate(-50%,-50%); */
  border-radius: 40%;
  width: 90px;
  height:90px;
/*   background:green; */
}
.orbit-view-Ring{
    width: 120px;
    height: 120px;
/*   background: pink; */
    border-radius: 50%;
    border: 3px solid grey;
/*     transform: perspective(700px) rotateX(35deg) rotateY(35deg);  */
    transition: all 0.5s ease-in-out;
  margin-left: -18px;
    margin-top: -18px;
  position:absolute;
}
.ringMercury{
  z-index:3;
}
.ringVenus{
  width:180px;
  height:180px;
  margin-left:-48px;
  margin-top:-45px;
  z-index:2;
}
.ringEarth{
  width:250px;
  height:250px;
  margin-left: -85px;
  margin-top: -80px;
  z-index:1;
}
.animate-mercury{
  animation: rotate 2s linear infinite;
  margin-top:40%;
  margin-left:-9%;
  width:140px;
}
.animate-venus{
  animation: rotate 3s linear infinite;
  margin-top:39%;
  margin-left:-9%;
  width:210px;
}
.animate-earth{
  animation: rotate 4s linear infinite;
  margin-top:39%;
  margin-left:-9%;
  width:295px;
}
.mercuryResize{
  width:20px ;
  height:20px;
  z-index:5;
}
.venusResize{
  width:30px ;
  height:30px;
  z-index:5;
}
.earthResize{
  height: 40px;
  width: 40px;
  z-index: 5;
}
.click-animate-arrow{
  background-color:#9e9e9e;
  height:10px;
  margin-top:10px;
  margin-left:-209px;
}
.info-container{
  background-color: #9e9e9e;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-flow: column wrap;
  z-index:-1;
}

@keyframes rotate{
    0% {transform:rotate(0deg);}
    100% {transform:rotate(360deg);}
}
footer{
  display:flex;
  justify-content:flex-end;
  align-items: flex-end;
  height: 100px;
  background: lightblue;
}
footer .created{
  background:whitesmoke;
  border-radius: 5px;
}
!

JS 

              
                const planets = [
        {
              name:"Sun",
              mass:"1 988 500",
              diameter:"1 391 016",
              density: 1.408
        },
        {
              name:"Mercury",
              mass:0.3302,
              diameter:4.878,
              density:5.427,
              rotation:1407.6,
              distance:57.9,
              revolution:87.969      
        },
        {
              name:"Venus",
              mass:4.869,
              diameter:12.100,
              density:5.204,
              rotation:5832.5,
              distance:108.2,
              revolution:224.7
        },
        {
              name:"Earth",
              mass:5.975,
              diameter:12.742,
              density:5.520,
              rotation:23.93,
              distance:149.6,
              revolution:365.25
        },
        {
              name:"Mars",
              mass:0.6419,
              diameter:6.779,
              density:3.933,
              rotation:24.62,
              distance:227.9,
              revolution:686.98
        }
]

const mercury = document.getElementById("mercury");
const venus = document.getElementById("venus");
const earth = document.getElementById("earth"); 
// const mars = document.getElementById("mars");
let rotate = true;


const imgsun = document.getElementById("imgSun");
const imgmercury = document.getElementById("imgMercury");
const imgvenus = document.getElementById("imgVenus");
const imgearth = document.getElementById("imgEarth"); 
// const imgmars = document.getElementById("imgMars");
const solarsystem = document.getElementById("solarsystem");


imgsun.addEventListener("mouseenter", function(){imgsun.style.opacity = "1";});
imgsun.addEventListener("mouseout", function(){imgsun.style.opacity = "0.7"}); 

imgsun.addEventListener('click', planetActivate);
imgmercury.addEventListener('click', planetActivate);
imgvenus.addEventListener('click', planetActivate);
imgearth.addEventListener('click', planetActivate);


function planetActivate(event){
  let src = event.target.getAttribute("id");
  rotate = !rotate;
  const state = rotate ? "running": "paused";
  mercury.style.animationPlayState = state;
  venus.style.animationPlayState = state;
  earth.style.animationPlayState = state;

  if(!rotate){
    TweenMax.to(".click-animate-arrow", 1.5, {width: 209})
    TweenMax.to(".info-container", 2.5, {width: 209, delay: 1.5})
    showInfo(src);
  }else{
    TweenMax.to(".info-container", 2.5, {width: -209})
    TweenMax.to(".click-animate-arrow", 2.5, {width: -209, delay: 1.0})
  }
}

function showInfo(src){
  let planetName = src.substring(3); // skip three letters and start at index
  const planetTitle = document.getElementById("planetTitle");
  const planetDetails = document.getElementById("planetDetails");
  planets.forEach((planet) => {
    if(planet.name === "Sun"){
      planetTitle.innerHTML = "<h1>" + planet.name + "</h1>";
      planetDetails.innerHTML = "<br>Mass: " + planet.mass + " [10<sup>24</sup> kg]<br>" + " Diameter: " + planet.diameter + " km<br>" + " Density: " + planet.density + " [kg/m<sup>3</sup>]";
    }else if(planet.name === planetName){
      planetTitle.innerHTML = "<h1>" + planet.name + "</h1>";
      planetDetails.innerHTML = "<br>Mass: " + planet.mass + " [10<sup>24</sup> kg]<br>" + " Diameter: " + planet.diameter + " km<br>" + " Density: " + planet.density + " [kg/m<sup>3</sup>]<br>" + " Rotation: " + planet.rotation + " hours<br>" + " Distance: " + planet. distance + " [10<sup>6</sup> km]<br>" + " Revolution: " + planet.revolution + " days";
    }else{
      console.log("sorry, no planet existed")
    }
  })

}
!
999px

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