If confirmed, this discovery would be the strongest evidence that two exoplanets can share one orbit.
, an international team of scientists analyzed archival ALMA observations of the PDS 70 system system, and spotted the cloud of debris at the location in PDS 70b’s orbit where Trojans are expected to exist. Trojans typically occupy two extended regions in a planet’s orbit where the combined gravitational pull of the star and the planet can trap material called.
“Who could imagine two worlds that share the duration of the year and the habitability conditions? Our work is the first evidence that this kind of world could exist,” said Balsalobre-Ruza. “We can imagine that a planet can share its orbit with thousands of asteroids as in the case of Jupiter, but it is mind blowing to me that planets could share the same orbit.
“The future of this topic is very exciting and we look forward to the extended ALMA capabilities, planned for 2030, which will dramatically improve the array’s ability to characterize Trojans in many other stars,” study co-author and European Southern Observatory Head of the Office for Science Itziar De Gregorio-MonsalvoLaura is a science news writer, covering a wide variety of subjects, but she is particularly fascinated by all things aquatic, paleontology, nanotechnology, and exploring how...
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