Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Super-Earth Opportunity - Search for Habitable Exoplanets in the
  2020s   The recent discovery of a staggering diversity of planets beyond the Solar
System has brought with it a greatly expanded search space for habitable
worlds. The Kepler exoplanet survey has revealed that most planets in our
interstellar neighborhood are larger than Earth and smaller than Neptune.
Collectively termed super-Earths and mini-Neptunes, some of these planets may
have the conditions to support liquid water oceans, and thus Earth-like
biology, despite differing in many ways from our own planet. In addition to
their quantitative abundance, super-Earths are relatively large and are thus
more easily detected than true Earth twins. As a result, super-Earths represent
a uniquely powerful opportunity to discover and explore a panoply of
fascinating and potentially habitable planets in 2020 - 2030 and beyond.

24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ