When the rotation of a star is misaligned from the orbits of its planets, astronomers often attribute the misalignment to planetary dynamics. In the case of K2-290 A, today’s authors instead attribute its misalignment to its stellar companion.
There is a low occurrence rate of exoplanets between 1.5 and 2.0 Earth radii. Today’s authors explore the density of the stellar field the planet resides in as a potential contributor to this gap.
Today’s authors make the first direct observation of a brown dwarf, a substellar object that can be considered a failed star.
Today’s authors study one of the oldest known galaxies and its spectra to learn more about the early universe.
The authors of today’s paper explore the elements found in five different metal-poor stars.