Rosetta will deploy the Philae lander to the surface of comet 67P/Churyumov-Gerisamenko for in situ analysis with its 10 instruments:

• APXS: Alpha Proton X-ray Spectrometer (studying the chemical composition of the landing site and its potential alteration during the comet's approach to the Sun)
• CIVA: Comet Nucleus Infrared and Visible Analyser  (six cameras to take panoramic pictures of the comet surface)
• CONSERT: COmet Nucleus Sounding Experiment by Radiowave Transmission (studying the internal structure of the comet nucleus with Rosetta orbiter)
• COSAC: The COmetary SAmpling and Composition (detecting and identifying complex organic molecules)
• PTOLEMY: Using MODULUS protocol (Methods Of Determining and Understanding Light elements from Unequivocal Stable isotope compositions)  to understand the geochemistry of light elements, such as hydrogen, carbon, nitrogen and oxygen.
• MUPUS: MUlti-PUrpose Sensors for Surface and Sub-Surface Science (studying the properties of the comet surface and immediate sub-surface)
• ROLIS: Rosetta Lander Imaging System (providing the first close-up images of the landing site)
• ROMAP: Rosetta Lander Magnetometer and Plasma Monitor (studying the magnetic field and plasma environment of the comet)
• SD2: Sampling, drilling and distribution subsystem (drilling up to 23 cm depth and delivering material to onboard instruments for analysis)
• SESAME: Surface Electric Sounding and Acoustic Monitoring Experiment (probing the mechanical and electrical parameters of the comet)