Matters are further complicated when astronomers study distant exoplanets far beyond our reach.
Often times we can catch a glimpse of these planets' atmosphere by the light bouncing off them, but we cannot see much further than that.
And if dense clouds are in the way, preventing light from penetrating, the planets' secrets could be forever hidden from sight.
But researchers at the University of Warwick have now proposed high-resolution spectroscopy technology could potentially detect traces of water well above these impenetrable clouds.
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