Zen, a space friend

Sparkle, a space friend

Ringo, a space friend

My sticker book

Tap a sparkling star on any page to meet a space friend and keep their sticker.

Deep-blue Neptune and its faint rings in a distant star field

Page 17 · The windy blue world

Neptune

Deep-blue Neptune is the farthest major planet from the Sun. Fierce winds race through its atmosphere, and its dark storms can appear and then fade away.

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Voyager 2 flying past Neptune

Ari and Dot observing Neptune from their bubble spacecraft

Ari presenting Neptune

Ari bracing as if feeling Neptune's winds

Ari looking toward the distant Sun

Dot scanning Neptune's weather

Dot measuring Neptune's winds

Dot studying Voyager 2 observations

A far, windy blue world

Far from the Sun

Tap the diagram to replay its motion. Diagrams are explanatory and not to scale.