Besides the Sacknoff Prize, a number of organizations offer scholarships and prizes for students and researchers interested in space. These include:
Named for NASA’s first historian, it recognizes outstanding books that advance public understanding of astronautics.
It recognizes exceptional sustained efforts to inform and educate on astronautical history.
$21,250 for a 6-9 month research fellowship.
A $15,000 stipend supporting one year of dissertation research.
Sponsors the scholarly community with a number of programs.
Several grants to support visiting scholars or to cover expenses for travel and access to their archives.
HSS administers several aerospace and space technology history fellowships for NASA.
The SPACE 3.0 Foundation awards a $500 prize to a university student for the best space history research paper. The award also includes publication in the peer-reviewed journal Quest and an invitation to present at the Society for the History of Technology annual meeting.
A $5,000 research grant awarded by the Smithsonian National Air & Space Museum in even numbered years.
A 3-12 month, in-residence fellowship for pre- or post-doctoral research.
A 12-month fellowship for senior scholars working on a book.
A 9-12 month, in-residence fellowship open to mid-career scholars and non-academic candidates.
Their website contains details on several fellowships, awards, and prizes of interest to the history community.
Quest and the SPACE 3.0 Foundation have identified links from a number of organizations and institutions that might be of interest to you. Among these are: