These suggestions are about main planet pages.
When you choose a random planet the program gives you only main information about that planet.I suggest adding "Learn More" button so if user wants to learn more about that planet they will click the button.
After adding this function users will be able to learn more about the star,planet basically any space member they want to learn about.After clicking "Learn More" screen a square will pop-up and will give the information,after reading user will click the X button on the right up.