A new study argues that humanity has already launched several robotic probes on trajectories that could eventually take them into other star systems, even though those missions were not originally intended for interstellar travel. The study highlights five spacecraft—Pioneer 10 and Pioneer 11, Voyager 1 and Voyager 2, and New Horizons—that have traveled far beyond the planets and are on escape trajectories from the Solar System. Although these probes are expected to be non-operational by the time they would reach any other system, the paper presents them as proof that spacefaring civilizations can build and launch interstellar-bound robotic explorers. The study then turns to the related question of whether other civilizations might have sent probes into our Solar System. It concludes that scientists currently have limited ability to detect such objects and therefore do not know whether any alien probes are present in our “cosmic backyard.” The research emphasizes that improving detection capabilities would be necessary for future attempts to search for potential external probes passing through or arriving near Earth.
Study reviews Solar System probes that could one day reach other stars
A new study argues that humanity has already launched several robotic probes on trajectories that could eventually take them into other star systems, even though those missions were not originally int...
- Pioneer 10, Pioneer 11, Voyager 1, Voyager 2, and New Horizons are on trajectories that can carry them out of the Solar System.
- These spacecraft are expected to be non-operational by the time they would reach another star system.
- The missions are cited as evidence that spacefaring civilizations can build interstellar-bound robotic probes.
- The study says scientists do not currently know whether any other civilizations have sent probes to the Solar System.
- The paper argues that better technology is needed to search for potential external probes.
Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic explorers—Pioneer 10 and 11, Voyager 1 and 2, and New Horizons—are all on escape trajectories out of the solar system and might someday enter another one. They will no longer be operational at that point, but they serve as proof of concept that spacefaring civilizations do indeed build interstellar probes.
2 months agoEven at this early stage in our space faring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic explorers - Pioneer 10 and 11, Voyager 1 and 2, and New Horizons - are all on escape velocities out of the solar system, and might someday enter another one. They will no longer be operational at that point, but they serve as a proof of concept that spacefaring civilizations do indeed build interstellar probes. Which raises the obvious question - has anyone else sent their own robotic explorers to ours? In a recent paper, published in the Proceedings of the IAU Centenary Symposium, astronomer T. Joseph W. Lazio, points out a painful truth - we still have no idea, and our technology will need to get much better if we plan to find out.
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