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

Read also:

• What does it feel like to "lose your looks" to age?
• Why do men love boobs (irrespective of big or small)?
• Can I know a love story of a medical student?
• What are the most shocking facts about the Bollywood industry?
• 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?
• If women see themselves as free, dignified, human beings just as good as men, can Trump hang it up and just lose in a landslide at last? How can men who like and respect women help improve womens' self-esteem?
• Why have feminists not demanded that females be required to register with the selective service? Are female lives more precious than male lives?
• I haven’t eaten junk food for weeks, I ate dirty all-day yesterday, but I can’t even workout, why am I so tired?
• Why do men like women gold diggers?
• How do I convince flat earthers that the earth is round?
• Why didn't Taylor Swift do Taylor Swift (Taylors version)?
• Why would an older small breed dog become obsessive about hygiene?
• Do flat Earthers really exist? Why do they believe the Earth is flat?