Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metric-affine gravity effects on terrestrial (exo-)planets profiles   Mass-radius relations of homogeneous cold spheres are obtained for six solid
materials commonly found in terrestrial planets. An additional degeneracy in
the (exo-)planets' profiles is discussed together with their properties
concluded from our findings in the framework of Palatini $f(\mathcal R)$
gravity. Moreover, a new test of gravity has been proposed: The results
presented here will allow to test and to constrain models of gravity by the use
of seismic data acquired from earthquakes and marsquakes.

18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph