Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark Matter is Baryons   A comet-like, but magnitudes smaller, extremely low albedo interstellar
meteoroid population of fragile aggregates with solar type composition,
measured in space and terrestrially, is most probably the universal dark
matter. Although non-baryonic particles cannot be excluded, only "Big Bang"
cosmology predicts an appreciable fraction of such alternate forms. As more
counter-physics hypotheses are added to fit observation to the expanding
universe assumption, a classical physics alternative proffers dark matter
interactive red shifts normally correlated with distance. The cosmic microwave
background results from size-independent thermal plateau radiation that
emanates from dark matter gravitationally drawn into the Galaxy.

25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int