Two planets in one orbit? It could be possible, according to new research looking at planetary system PDS 70.
The vast majority of exoplanets that have been discovered are within star systems broadly similar to our solar system: one stars at the center, with planets orbiting at a variety of distances. But recent research has turned up something very unusual: what could be two exoplanets sharing the same orbit, which, if it is confirmed, would be the first discovery of its kind.
“Two decades ago it was predicted in theory that pairs of planets of similar mass may share the same orbit around their star, the so-called Trojan or co-orbital planets. For the first time, we have found evidence in favor of that idea,” said lead author Olga Balsalobre-Ruza of the Centre for Astrobiology in Madrid in a statement.
“Exotrojans [Trojan planets outside the Solar System] have so far been like unicorns: they are allowed to exist by theory but no one has ever detected them,” said co-author Jorge Lillo-Box, also of the Centre for Astrobiology.
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