A Pen by Mark Lee.

style.css

body{
  min-height: 100vh;
  min-width: 100vw;
  background-color: #000;
  background-image:url('http://imgur.com/Mcj5wR3.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  animation: slides 120s infinite;
}
@keyframes slides{

10%{     
	  background-image:url('http://imgur.com/qHyu69i.jpg');
	}
	20%{     
	  background-image:url('http://imgur.com/kvVV43f.jpg');
	}
	30%{     
	  background-image:url('http://imgur.com/QAU4QUw.jpg');
	}
	40%{     
	  background-image:url('http://imgur.com/WCuLbZu.jpg');
	}
	50%{     
	  background-image:url('http://imgur.com/Hm3294a.jpg');
	}
	60%{     
	  background-image:url('http://imgur.com/X7SprEf.jpg');
	}
	70%{     
	  background-image:url('http://imgur.com/4YnYI7a.jpg');
	}
	80%{     
	  background-image:url('http://imgur.com/DKAtT0x.jpg');
	}
	90%{     
    background-image:url('http://i.imgur.com/J3zz73X.jpg');
	}
}

zero-element-css-only-space-slideshow.markdown

zero-element css-only space slideshow

No HTML. No JavaScript. Only CSS. All images courtesy of NASA/JPL-Caltech. Does not appear to work in Firefox :(

A Pen by Mark Lee on CodePen.

License.