… Unraveling the lunar record of implanted nitrogen isotopes is beyond the scope of this
article. We simply suggest that the low protosolar value of 15 N/ 14 N we have established here …

… protosolar nebula from which the Solar System formed — is highly depleted in the heavier
isotope compared with the reference nitrogen … The measurements indicate that the protosolar …

… We identify the form of nitrogen in which the measurement was made and the likely form of
nitrogen when it was delivered to the target body. Sources: 1 Marty et al. (2010); 2 Owen et al. …

Understanding the origin of life-essential volatiles such as nitrogen (N) in the Solar System
and beyond is critical to evaluate the potential habitability of rocky planets 1 , 2 , 3 , 4 – 5 . …

… Variations in the nitrogen isotopic … of nitrogen isotopes from different host phases of pre-solar
origin. Alternatively, it could result from mixing between 15N-depleted protosolar nitrogen …

… nitrogen atmospheres remain unclear, even though it might be likely that their atmospheres
originated from the protosolar … isotope measurement techniques with a focus on nitrogen. …

… In contrast, the origin of nitrogen, the most … of nitrogen in the present-day solar neighbourhood
(which we denote ℛ 0 ) is poorly constrained; and ii) the primary repository of nitrogen in …

… However, the range reported for ammonia in Jupiter's atmosphere strongly suggests a
negative δ 15 N value for the protosolar nebula, in agreement with our present SW measurement. …

… of nitrogen and solar wind argon, measured nitrogen isotopic … to the measured solar wind
nitrogen value from the Genesis … -solar planetary nitrogen source with solar wind nitrogen is …

… Macromolecular assemblages involving formaldehyde polymerization, both inherited
from the cloud and newly formed in cooler regions of the protosolar or solar nebula, readily …