Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recognizing the Value of the Solar Gravitational Lens for Direct
  Multipixel Imaging and Spectroscopy of an Exoplanet   The Solar Gravitational Lens (SGL) allows for major brightness amplification
($\sim 10^{11}$ at wavelength of $1~\mu$m) and extreme angular resolution
($\sim10^{-10}$ arcsec) within a narrow field of view. A meter-class telescope,
with a modest coronagraph to block solar light with 1e-6 suppression placed in
the focal area of the SGL, can image an exoplanet at a distance of 30 parsec
with few kilometer-scale resolution on its surface. Notably, spectroscopic
broadband SNR is $\sim 10^{-6}$ in two weeks of integration time, providing
this instrument with incredible remote sensing capabilities. A mission capable
of exploiting the remarkable optical properties of the SGL allows for direct
high-resolution imaging/spectroscopy of a potentially habitable exoplanet. Such
missions could allow exploration of exoplanets relying on the SGL capabilities
decades, if not centuries, earlier than possible with other extant
technologies.

4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex