This picture shows a side view of the instruments contained on the intrument deck. This includes a suite of three Neutral Atom Imaging instruments used to record the glow of fast atoms coming from throughout the Earth's magnetic field. The Far Ultraviolet Imaging instrument will collect images from space of the Earth's proton aurora. The Extreme Ultraviolet Imager is used to capture images of the plasmasphere, which is the tenuous extension of the Earth's electrically charged upper atmosphere, or ionosphere. The Radio Plasma Imager instrument provides a three-dimensional view of the plasmasphere by sounding it with radio pulses, like an ultrasound image of the human body. To accomplish this, it uses the longest antennas ever deployed in space, longer than the height of the Empire State Building.