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Plotting the Destinations of 4 Interstellar Probes
Image: Roger Sinnott & Rick Fienberg/Sky & Telescope/International Astronomical Union

This past October, NASA announced that after 36 years of flight, Voyager 1 had finally crossed into the interstellar medium that fills the space between the stars. Although it is the first probe to do so, Voyager 1 is not alone in its one-way mission out of the solar system: Four other probes are following it. The destinations of Voyager 1 and 2 and Pioneer 10 and 11 are plotted below. The ultimate destination of the fifth probe—the New Horizons mission to Pluto—is still unknown (its trajectory will be adjusted during its mission in hopes of sending it past another Kuiper Belt object). Although these probes will be dead metal when they reach the stars, all but New Horizons have messages on board designed to be decoded by aliens—just in case.

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Top Tech 2022: A Special Report

Preview two dozen exciting technical developments that are in the pipeline for the coming year

1 min read
Photo of the lower part of a rocket in an engineering bay.

NASA’s Space Launch System will carry Orion to the moon.

Frank Michaux/NASA

At the start of each year, IEEE Spectrum attempts to predict the future. It can be tricky, but we do our best, filling the January issue with a couple of dozen reports, short and long, about developments the editors expect to make news in the coming year.

This isn’t hard to do when the project has been in the works for a long time and is progressing on schedule—the coming first flight of NASA’s Space Launch System, for example. For other stories, we must go farther out on a limb. A case in point: the description of a hardware wallet for Bitcoin that the company formerly known as Square (which recently changed its name to Block) is developing but won’t officially comment on. One thing we can predict with confidence, though, is that Spectrum readers, familiar with the vicissitudes of technical development work, will understand if some of these projects don’t, in fact, pan out. That’s still okay.

Engineering, like life, is as much about the journey as the destination.

See all stories from our Top Tech 2022 Special Report

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