Radar evidence of subglacial liquid water on Mars

@article{Orosei2018RadarEO,
  title={Radar evidence of subglacial liquid water on Mars},
  author={Roberto Orosei and Sebastian E. Lauro and Elena Pettinelli and Andrea Cicchetti and Marcello Coradini and Barbara Cosciotti and Federico Di Paolo and Enrico Flamini and Elisabetta Mattei and Maurizio Pajola and Francesco Soldovieri and Marco Cartacci and F. Cassenti and Alessandro Frigeri and Stefano Giuppi and Riccardo Martufi and Arturo Masdea and Giuseppe Mitri and C. Nenna and Raffaella Noschese and Marco Restano and Roberto Seu},
  journal={Science},
  year={2018},
  volume={361},
  pages={490 - 493}
}
Liquid water under Mars' southern ice cap Mars is known to host large quantities of water in solid or gaseous form, and surface rocks show clear evidence that there was liquid water on the planet in the distant past. Whether any liquid water remains on Mars today has long been debated. Orosei et al. used radar measurements from the Mars Express spacecraft to search for liquid water in Mars' southern ice cap (see the Perspective by Diez). They detected a 20-km-wide lake of liquid water… 

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