Alien Earths revealed: Planet hunters catalog 126 strange new worlds

The new three-year catalog provides crucial mass and radius data from TESS, advancing our understanding of exoplanets.

The calculations employed by the researchers were based on studying “wobbles” made by the planets as they orbited their stars.NASA recently published a new catalog that looks at 126 such worlds and describes in much greater detail and measurement how these planets compare to ours. The survey and its related papers provide a unique look at a mixture of various planets, ranging from those with extreme environments to those that can sustain life.

This so-called “radial velocity method” also allowed the researchers to calculate the planets’ masses. Since a planet’s gravitational pull on a star is proportional to its mass, scientists could extrapolate the measurements for the 126 planets they studied. Another planet, described in the paper by UCR graduate student Daria Pidhorodetska, is about half the size of Neptune, with a 19-day orbit around a star quite similar to our Sun. As Pidhorodetska shared in a, “Planets smaller than Neptune but larger than Earth are the most prevalent worlds in our galaxy, yet they are absent from our own Solar System.” As such, every time this kind of planet is found, it reminds us of our uniqueness in the Universe, according to the researcher.

He shared that as there were so many new planet discoveries in the sample they studied, there were also numerous peculiar cases. “One of these planets, called TOI-1798 c, only takes less than 12 hours to orbit its star,” he said, adding, “Considering that Mercury takes 88 days to orbit the Sun, TOI-1798 c is unlike anything we see in our solar system.”

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