Lunar and Planetary Institute

Thermally metamorphosed CM chondritic clasts reveal deep interior conditions: Insights from thermometry

We studied four coarse-grained crystalline clasts within CM carbonaceous chondrites to constrain their thermal history and origin. These clasts have near-identical mineralogies, dominated by olivine (Fa 37 or Fa 40 ), with lesser quantities of high-Ca pyroxene (diopside: Fs 10-11...

A new 222-m diameter lunar crater

Observing the aftermath of recent impact events on the Moon tests models of impact frequency, surface change rates, and cratering physics. The Lunar Reconnaissance Orbiter Camera (LROC) Wide Angle Camera (WAC; 100-meter scale) images the whole Moon each month and has done so sinc...

Electron Shot Noise on a Current Biased Antenna

Abstract The Parker Solar Probe (PSP) Fields Experiment (FIELDS) uses Radio Frequency Spectrometer (RFS) data and Quasi‐Thermal Noise Spectroscopy (QTN) to determine the temperature and density of electrons in the heliosphere. The FIELDS antennas typically operate with a negative...