what tools are used to study venus?
['ASPERA (Analyser of Space Plasma and Energetic Atoms)', 'MAG (Venus Express Magnetometer)', 'PFS (Planetary Fourier Spectrometer)', 'SPICAV/SOIR (Ultraviolet and Infrared Atmospheric Spectrometer)', 'VeRa (Venus Radio Science Experiment)', 'VIRTIS (Visible and Infrared Thermal Imaging Spectrometer)', 'VMC (Venus Monitoring Camera)']