Were Newton's laws superseded by quantum mechanics?

Great question Kara!

Physics is the study of all things huge, small, and in-between and how these objects interact and change. You may have heard of different concepts or branches within physics: some particularly famous ones include Newton's Laws (studied within classical mechanics), quantum physics, and relativity to name just a few.

What's great about physics is that it's constantly evolving as scientists make new discoveries to support (or contradict) their hypotheses. Quantum physics is a fairly recent example of this; it showed us that particles on the tiniest of scales behave a lot differently than we expected from classical laws (these include Newton's Laws). But it's important to note that this only applies to particles on the quantum scale. Bodies such as galaxies, stars, and everyday objects we see all the time are still very accurately described by Newton's Laws.

So on the whole, no, quantum physics doesn't entirely eclipse classical mechanics, instead it adds to the already rich tapestry that is physics.