@testset "Inner Loop" begin

  println("Testing Inner Loop")

  using Dates

  phase1 = Phase("Earth", "Mars", 3600*24*365*1.5, 5., 2.)
  phase2 = Phase("Mars", "Jupiter", 3600*24*365*3.5, 2., 0.1)
  inner_loop(DateTime(2024,3,5), 0.3, 0.4, [phase1, phase2])

  @test true

end