Charles Q. Choi is a contributing writer for Space.com and Live Science. He covers all things human origins and astronomy as well as physics, animals and general science topics. Charles has a Master of Arts degree from the University of Missouri-Columbia, School of Journalism and a Bachelor of Arts degree from the University of South Florida. Charles has visited every continent on Earth, drinking rancid yak butter tea in Lhasa, snorkeling with sea lions in the Galapagos and even climbing an iceberg in Antarctica. Visit him at http://www.sciwriter.us
, which holds just about 17 times Earth's mass. Previous research has found that Neptune-size planets display a great deal of variety, ranging from icy worlds clad in thick atmospheres of hydrogen and helium, such as the Neptune we know and love, to very dense planets made of either substantial amounts of water or bundles of rock wrapped in thinnerIn the new study, astronomers investigated TOI-1853, an orange dwarf star about 80 percent of the sun's mass and diameter.
, completing one orbit in just 30 hours instead of the 365 days it takes Earth. The planet's extreme proximity to its host star also makes it searing hot at about 2,200 degrees Fahrenheit .The newfound planet's diameter is about 3.46 times larger than Earth's, making it a bit smaller than Neptune, which is about 3.8 times wider than Earth.
"Our result is yet another proof that exoplanet research is constantly holding surprises," study lead author Luca Naponiello, an astrophysicist at the University of Rome, told Space.com."We are still finding truly unique worlds decades after the first discovery. It's exciting to be part of this journey."
"The discovery of TOI-1853 b implies that large planets can have surprising amounts of heavy elements, much more than previously thought," Naponiello added."Neptunian planets show an astonishing variety of density and compositions, but we didn't believe they could be so compact." For the most part, exoplanets that orbit their stars as closely as TOI-1853 b does are either rocky planets with diameters less than twice Earth's or so-called hot Jupiters, gas giants sizing in at more than 10 times Earth's diameter. Mysteriously, scientists have only found a fewWeird dark spot on Neptune may have a bright spot buddy
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