Log of Nancy J. Lindsey's Jan - Jun 2000 (UND-SPST 425) observations with the naked eye, Tasco 4.5 reflector telescope, and UND 16" Schmidt-Cassegrain Telescope. Observartion include aurora, sunspots, planets, galaxies, nebula, comets, distant-stars, and Messier objects. Click cover image to open logbook.
Aurora (Northern Lights) observations in Coldfoot Alaska (in the Artic Circle) in 2016 with the naked eye. Images are from the team effort's of our February 2016 Alaska Adventure Tours 'tribe'. Click aurora image to see more.
Full solar eclipse observed August 21st 2017, from NASA-Goddard Space Flight Center (GSFC) with the eclipse glasses and cameras (digital and obscura). Click on eclipse image to view photos taken during the event.
Kosmos 2251 crashed into Iridium 33 on Tuesday, Feb. 10th 2009 approximately 800 km over northern Siberia both were destroyed. A video simulation of the event, Courtesy of NASA/MSNBC, is available here to play/download.

History of On Orbit Fragmentation 14th Edition (NASA/TM-2008-214779)
History of On Orbit Fragmentation 16th Edition (NASA/TM-20220019160)
Lunar Station Protection: Lunar Regolith Shielding
The Space Exploration Debate: Human vs. Robot
Meteor Tracking Networks: Past, Present, and Future
Management Theory: Intrapreneuring Analysis Paper
Space Sector: Spacekeeping Economic Analysis
A Study of International Compliance with Current Space Debris Mitigation Initiatives
Lagrangian Point - L2 Environments Summary (As of 1999)
Guideline For Failure Modes and Effects Analysis and Risk Assessment Handbook
Reliability Analysis of Complex NASA Systems with Model-Based Engineering (RAMS 2019/2020)
(See also Tips and Guidance Sheets for SysML & MADe: Model-Based SMA Initiative Phase 1 Report:
Reliability Tips (2 files available and current as of the conclusion of Phase 1), and see
phase 2 tips for the most current MADE guidance)
System Safety Analysis of Complex NASA Systems with Model-Based Engineering
(ISSC 2022)
Model-Based SMA Initiative Phase 2 Report: Safety
(See also Tips and Guidance for MADE (as of the conclusion of Phase 2); and
Phase 1 SysML Tips, for the most current SysML guidance)
Model-Based Engineering/Digital Engineering (MBE/DE) and Mission Assurance
of Complex NASA Systems with Federated Modeling
(Includes a guidance/tips appendix)
Tri-Agency Reliability Engineering Guidance: Post Mission Disposal and Extension Assessment
(See the supporting Guidance Addendum to gain more understanding via the provided detailed example(s))
NASA Methodology for Physics of Failure-Based Reliability Assessments Handbook