The Digital Press

A new telescope design proposes using a long, narrow rectangular mirror instead of a traditional circular one to better detect Earth-like exoplanets. This approach could make imaging these distant worlds more feasible and cost-effective with technology comparable in size to the James Webb Space Telescope.

Why it matters: The rectangular mirror design could resolve Earth-size planets around nearby stars at key infrared wavelengths for water vapor detection.

The big picture: Current large circular mirrors are costly and complex; the rectangular design simplifies construction and operation while maintaining effective resolution.

Stunning stat: A 20-by-1 meter rectangular mirror can find half of Earth-like planets within 30 light-years in under three years.

Commenters say: Many find the design innovative and promising for exoplanet imaging, though some express curiosity about practical engineering challenges and telescope rotation.