Galileo observed features he interpreted to be mountains and craters on the surface of the Moon.
(Galileo; observed; features he interpreted) (features; interpreted; to be mountains and craters on the surface of the Moon) (features he interpreted; to be; mountains and craters on the surface of the Moon)
Galileo features features he interpreted
observed interpreted to be
features he interpreted
to be mountains and craters on the surface of the Moon
mountains and craters on the surface of the Moon