How do flat Earthers explain the existence of other spherical planets?

Read also:

• What made you feel disgusted today?
• Why is Reddit blocked by the Indonesian government?
• What should I do to get over a relationship?
• How can we understand the mind of a Trump supporter?
• Why is my older sister so mean to me as if I was her enemy?
• Exploring the cosmos fills us with wonder, Pope tells scientists - Vatican News
• In the last 500 years, have there been civilizations whose cruelty matched that of Nazi Germany?
• Why cant I feel anything in my sleep? I cannot even feel myself moving, breathing, and swallowing saliva! I cannot even hear anything, not even my alarm! Some people that I've been with says that I'm moving a lot in my sleep, how can I stop it?
• Inside J.J. Spaun's Arizona Home as He Claims Surprising U.S. Open Win - Realtor.com
• Shakira Says Being an Immigrant in the U.S. Amid Trump’s Policies “Means Living in Constant Fear” - The Hollywood Reporter
• What happens to adults with Down syndrome when their parents can't look after them any more?
• Health officials warn of measles case from traveler at Dulles Airport - The Washington Post