Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The photo-biophylic character of the Milky Way   It is investigated how biofriendly is the Milky Way for photosynthetic life.
Special attention is dedicated to the role of the photobiological regime in the
emergence and evolution of this kind of life in terrestrial planets. Following
this line, it is investigated the potential role of stellar explosions as a
potential environmental perturbation in planets, emphasizing on Earth. The
difficulties in modelling the behaviour of stressed biological systems and the
robustness of life leads us to conclude the relative arbitrariness of defining
a galactic habitable zone with today's limited knowledge on the very possible
diverse sets of living creatures.

30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org