One planet is about the same size as Earth, while the other is slightly bigger, according to a report published on the arXiv preprint server.
A team of scientists, led by Melissa Hobson at the University of Geneva, states that both planets have shorter orbital periods as compared to Earth.
These exoplanets were first spotted by the Transiting Exoplanet Survey Satellite (TESS) telescope, launched in 20. The confirmation was done using the Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations
The researchers in the paper wrote, “The planets were first identified as candidates by the Transiting Exoplanet Survey Satellite mission. We confirm and characterise these planets using radial velocities and activity indicators from the Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations (ESPRESSO).”
ESPRESSO is a powerful instrument that measures tiny wobbles in a star's motion and checks for signs of stellar activity. This helps scientists figure out the mass and orbit of the planets
The inner planet, TOI- 2322 b, is about the same size as Earth and has a mass less than 2.03 times that of Earth. It orbits every 11.3 days and has a temperature of around 330 degrees Celsius, which is way hotter than Earth, according to Phys.org.
The outer planet, TOI-2322 c, is estimated to be 18 times heavier than Earth. It is nearly 1.87 times the radius of Earth and is larger and heavier than the inner one.
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Both planets are rocky and have short orbital periods. TOI-2322 c has an internal structure similar to Earth, which means it likely has a core, mantle, and crust like our planet. It is the largest and one of the most massive planets known with an Earth-like composition.
So far, TESS has confirmed 656 as real planets.
