Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TESS Photometric Mapping of a Terrestrial Planet in the Habitable Zone:
  Detection of Clouds, Oceans, and Continents   To date, a handful of exoplanets have been photometrically mapped using
phase-modulated reflection or emission from their surfaces, but the small
amplitudes of such signals have limited previous maps almost exclusively to
coarse dipolar features on hot giant planets. In this work, we uncover a signal
using recently released data from the Transiting Exoplanet Survey Satellite
(TESS), which we show corresponds to time-variable reflection from a
terrestrial planet with a rotation period of 0.9972696 days. Using a spherical
harmonic-based reflection model developed as an extension of the STARRY
package, we are able to reconstruct the surface features of this rocky world.
We recover a time-variable albedo map of the planet including persistent
regions which we interpret as oceans and cloud banks indicative of continental
features. We argue that this planet represents the most promising detection of
a habitable world to date, although the potential intelligence of any life on
it is yet to be determined.

37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th