What If Earth Was in Fact Flat?

What if our Moon had a twin? Seeing not just one, but two of these satellites in the night sky might be spectacular. Let’s assume our second moon would be around 1,000 km (620 miles) wide and about one-thirtieth the mass of our current Moon. It would be about the same distance from Earth, too. Just like the sister satellite our Moon had 4.5 billion years ago.