I don't know if there are many jobs like teaching where it is actually HARDER to be out than it is to be there. Writing sub plans for secondary science teachers is almost always worse than powering through your dreaded seasonal allergies or actually making it to your bi-yearly dentist appointments.
Simple Rocket Science - NASA
It's Not Rocket Science - Creative and comprehensive science curriculum
Lesson Planning - It's Not Rocket Science
Making Sub Plans for Secondary Science - It's Not Rocket Science
Classroom observers using new tools to make teachers better
Model Rocket Aerodynamics: Stability
Lesson Planning - It's Not Rocket Science
Rocket Science! STEAM Activity Guide — NorthStar Educational Explorations
This no-prep paper AND digital paperless product is all of the notes, labs, activities, practices, projects, and tests you need to teach an ecology
Ecology Unit
High school science sub plans
35 Top Science Competitions for High School Students - Lateenz
Science Sub Plans for 4th and 5th Grade — The Science Penguin
Amy Brown Science: 5 Free Lessons to Leave in Your Science Sub Folder