The Aging Spacecraft of Deep Space
Beyond Earth and its bubble of satellites; past Mars, where rovers explore; past Jupiter and its circling orbiter—outside the solar system entirely—two spacecraft are gliding across interstellar space. They have crossed over the invisible boundary that separates our solar system from everything else, into territory untouched by the influence of the sun. People have seen much deeper into the universe, thanks to powerful telescopes that catch the light of distant stars. But this is the farthest a human invention has ever traveled. These hunks of gleaming metal and circuitry—they are the furthermost tangible proof of our existence.
The twin Voyager spacecraft took off in stuffed with information. Millions of miles away, they . They still collect data. But they are aging.
