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As the atomic numbers of these lanthanides increase, the radii of their ions decrease.

As an example, the masses and radii of all nuclei up to mass number 50 were calculated using this method.

The mission is approaching its 19th perihelion on March 30, 2024 at a distance of 11.5 solar radii from Sun center.

Astronomers from Germany and Switzerland have uncovered evidence of how the enigmatic gap in the size distribution of exoplanets at around two Earth radii emerges.

As a class, such stars are among the largest in the universe, with radii up to 1,500 times that of our sun and masses of up to 40 times larger than our home star.