The National Science Foundation (NSF) is offering the Mathematical and Physical Sciences Ascending Postdoctoral Research Fellowships (MPS-Ascend) to support postdoctoral researchers who aim to broaden participation among historically underrepresented groups in the fields of mathematical and physical sciences. Eligible candidates must be U.S. citizens or permanent residents, have completed their doctoral degree, and propose research that aligns with one of the NSF's divisions, including Astronomical Sciences, Chemistry, Materials Research, Mathematical Sciences, or Physics. This fellowship program is crucial for fostering diversity and developing future leaders in these scientific fields, with a total funding pool of $10 million available for approximately 50 awards, each ranging from $100,000 to $300,000. Proposals must be submitted by October 16, 2024, and candidates can reach out to NSF grants.gov support at grantsgovsupport@nsf.gov for assistance.