Sources

Picture 1

Slide 1

Slide 2

https://media.goboard.io/Particles-from-Hayabusa-space-probe-could-contain-extraterrestrial-life.html

http://www.nasa.gov/centers/jpl/education/spaceprobe-20100225.html

https://media.goboard.io/mars.html

Picture 2

https://media.goboard.io/viking.html