WALTzER: Wide-band Atmospheric Laboratory for Transiting Exoplanet Research
WALTzER is an ESA mission designed to simultaneously observe transiting exoplanets across a wide spectrum—UV to NIR—using three co-aligned channels. This allows scientists to characterize both the upper and lower atmospheres of over 30 gas-rich planets at once, linking atmospheric escape rates to stellar activity for a deeper understanding of planetary evolution.