Core Viewpoint - NASA has selected two scientific instruments for deployment by astronauts during the Artemis 4 mission, aimed at enhancing human understanding of the lunar environment and providing technical and scientific support for future lunar and Mars exploration [1] Group 1: Instrument Details - The first instrument, named "DUSTER," is a dust and plasma environment detector that will focus on studying lunar dust, which poses significant challenges for long-term lunar activities due to its strong adhesion and abrasiveness [1] - DUSTER consists of a set of instruments mounted on a small autonomous rover, designed to measure the lunar dust and plasma environment around the landing site, assessing their impact on astronaut activities and the landing and takeoff processes of landers [1] - The second instrument, "SPSS," is a lunar polar seismometer that will be used to detect the internal structure of the Moon, record the frequency of meteorite impacts, and monitor the seismic environment on the lunar surface in real-time to evaluate risks for astronauts [1] Group 2: Mission Timeline and Future Plans - Astronauts will also utilize an active seismic source device called "the impactor" to generate seismic energy for experiments aimed at probing the shallow structure near the landing site [1] - NASA has confirmed that these two scientific instruments have been selected for further development and are planned for use in the Artemis 4 mission, although the final payload arrangement is yet to be determined [1] - The Artemis 4 mission is a crewed lunar landing mission scheduled to take place no earlier than September 2028 [1]