The Digital Press

A new concept called the Torqued Accelerator using Radiation from the Sun (TARS) proposes using solar radiation to spin up a lightweight structure that stores rotational energy to propel small probes to interstellar speeds. This approach could enable sub-relativistic interstellar travel using commercially available materials without requiring powerful directed energy systems.

Why it matters: TARS offers a low-cost method to send microprobes beyond the solar system within a year, expanding space exploration possibilities.

The big picture: Interstellar flight remains challenging due to material limits and scaling, but TARS shows practical speeds are achievable without relativistic travel.

The other side: Achieving higher velocities demands exponentially larger designs, and relativistic speeds remain impractical with current materials and technology.

Commenters say: Many find TARS an innovative alternative to traditional solar sails, praising its feasibility and material use, while others discuss challenges in scaling and durability.