Bazaar Market
Visit bazaar.rocks Web Dev Full-stack commerce SvelteKitDjangoPostgreSQLTailwind CSS
A full-stack marketplace for used gear, vehicles, tools, and other high-value goods.
Systems + Software
Engineering tools with a product mindset
I'm Rob Rothschild, a systems & software engineer in Bellingham, WA, focused on simulation, data analytics, and interactive tools for hardware and test systems.
Explore projects across C++ gameplay, Python and MATLAB data-analysis tools, and modern web apps built with Astro, Django, and SvelteKit.
Current Projects
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Testing Dashboard
Engineering Lab workflow tooling MATLABPythonSQLSignal Processing
A custom dashboard for comparing collected test data against model predictions and engineering expectations.
Base Defender
Interactive Systems C++ prototype C++EmscriptenGameplay Systems
An arcade-style C++ project focused on moment-to-moment control, collision, and responsive gameplay systems.
Simulytics
Engineering Analytics platform PythonDjangoSvelteKitFlask
An interactive modeling and analysis dashboard built to make simulation outputs easier to inspect and compare.
Londonderry Quarry
Web Dev Client website AstroStatic Site DesignContent Structure
An early client-facing website built to present a Pacific Northwest sculptor and quarry operation online.
NASA's Astronomy Picture of the Day
2026-09-14 | Where Your Elements Came From
The hydrogen in your body and present in every molecule of water came from the Big Bang. There are no other appreciable sources of hydrogen in the universe. The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen. Much of the iron in your body was made during supernovas of stars that occurred long ago and far away. The gold in your jewelry was likely made from neutron stars during collisions that may have been visible as short-duration gamma-ray bursts or gravitational wave events. Elements like phosphorus and copper are present in our bodies in only small amounts but are essential to the functioning of all known life. The featured periodic table is color coded to indicate humanity's best guess as to the nuclear origin of all known elements. The sites of nuclear creation of some elements, such as copper, are not really well known and are continuing topics of observational and computational research. APOD's main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod