Newton open-sources GPU robotics physics engine

This is a serious infrastructure play for robotics research, not just another simulator repo. Newton looks like the kind of engine that could standardize how teams prototype sim-to-real workflows if its extensibility and GPU performance hold up in practice.

• –Built on NVIDIA Warp, with MuJoCo Warp integration, so it sits in a very strong performance lane for robotics workloads
• –Differentiable physics and custom solver support make it more interesting for learning-based robotics than a traditional rigid-body simulator
• –OpenUSD, URDF, and MJCF support lower the friction for existing robotics pipelines
• –The Linux Foundation stewardship signals broader ecosystem ambition, not just a single-vendor research project
• –Experimental Isaac Lab integration suggests Newton is already being threaded into NVIDIA's robotics stack, which raises its strategic importance