NASA finishes deploying the James Webb Space Telescope

NASA is one large step closer to putting the James Webb Space Telescope into service. The agency has successfully deployed the JWST's signature gold-coated primary mirror, completing all major deployments for the instrument. The mission crew still has to align the telescope's optics by moving the primary mirror's segments (a months-long process), but it's a strong sign the $10 billion device is in good shape. The JWST also requires a third course correction burn as it heads toward the L2 Lagrang...