Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark matter and dark energy proposals: maintaining cosmology as a true
  science?   I consider the relation of explanations for the observed data to testability
in the following contexts: observational and experimental detection of dark
matter; observational and experimental detection of dark energy or a
cosmological constant $\Lambda$; observational or experimental testing of the
multiverse proposal to explain a small non-zero value of $\Lambda$; and
observational testing of the possibility of large scale spatial inhomogeneity
with zero $\Lambda$.

0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci