Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 67P/Churyumov-Gerasimenko observation campaign in support of the
  Rosetta mission   We present a summary of the campaign of remote observations that supported
the European Space Agency's Rosetta mission. Telescopes across the globe (and
in space) followed comet 67P/Churyumov-Gerasimenko from before Rosetta's
arrival until nearly the end of mission in September 2016. These provided
essential data for mission planning, large-scale context information for the
coma and tails beyond the spacecraft, and a way to directly compare 67P with
other comets. The observations revealed 67P to be a relatively `well behaved'
comet, typical of Jupiter family comets and with activity patterns that repeat
from orbit-to-orbit. Comparison between this large collection of telescopic
observations and the in situ results from Rosetta will allow us to better
understand comet coma chemistry and structure. This work is just beginning as
the mission ends -- in this paper we present a summary of the ground-based
observations and early results, and point to many questions that will be
addressed in future studies.

4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
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The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg