What if you had to wake up a sleeping robot that was billions of miles away in space?

The Day Scientists Found New Horizons Awake!

A spacecraft woke up after a billion-mile nap to explore Pluto

NASA woke up a sleeping spacecraft that had traveled billions of miles toward Pluto!

Imagine sleeping for almost TEN YEARS and then waking up a billion miles from home! That's exactly what happened to NASA's New Horizons spacecraft on August 3, 2013.

New Horizons had been zooming through space since 2006, traveling toward the mysterious dwarf planet Pluto. But here's the cool part — to save energy during its super-long journey, the spacecraft spent most of its time in 'hibernation mode,' kind of like a bear sleeping through winter!

On this exciting day, mission controllers at Johns Hopkins University sent a special wake-up signal. After 15 minutes (that's how long it takes a message to travel that far!), they waited nervously. Would New Horizons answer?

It did! The spacecraft sent back a signal saying, 'I'm awake and ready to explore!'

💡 New Horizons is so far away that sending a text message to it takes over 15 minutes — even though the message travels at the speed of light!