This is a real shame, but something had to give with so many uber expensive programs coming to a head at the same time. The missions sound incredible:

• a comet surface sample return

• a mission to Jupiter’s volcanic moon Io

• a lunar geophysical network

• a sample return mission to the moon’s South Pole-Aitken Basin

• a mission to characterize the potential habitability of Saturn’s icy moon Enceladus

• a probe of Saturn’s atmosphere.