Scientists have unearthed a new exoplanet, PSR J2322-2650b, through NASA’s James Webb telescope. Its properties are in “stark contrast to every known exoplanet orbiting a main-sequence star,” said a study published in The Astrophysical Journal Letters. “How the planet came to be is a mystery,” NASA said in a press release.
The exoplanet is about the mass of Jupiter and is “known to orbit a pulsar, a rapidly spinning neutron star,” said NASA. This star is “completely bizarre — the mass of the sun, but the size of a city,” said Michael Zhang, a postdoctoral researcher at the University of Chicago and a co-author of the study.
PSR J2322-2650b is extraordinarily close to its star at just 1 million miles away, compared to the Earth’s distance from the sun, which is about 100 million miles. As PSR J2322-2650b is “big enough and close enough to its pulsar host,” the star’s gravity is “pulling the planet into a lemon shape,” said Scientific American.
What has interested scientists most is the planet’s atmosphere, which “nobody has ever seen before,” said Zhang. “Instead of finding the normal molecules we expect to see on an exoplanet, like water, methane and carbon dioxide, we saw molecular carbon, specifically C3 and C2.”
All these cosmic anomalies raise questions as to how PSR J2322-2650b formed in the first place. While designated as an exoplanet, some theorize that the planet is the “stripped remains of a former star” because of its strange composition, said Scientific American. |