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The nearly 18,000-pound observatory completed its barge journey from Maryland to Florida on June 21, beginning weeks of fuelling, solar panel tests, and clean-room checks before its August 30 target launch.
A peer-reviewed rebuttal co-authored by Nobel laureates Adam Riess and Brian Schmidt found two methodological mistakes in a high-profile 2025 study that claimed cosmic acceleration might be an illusion - and concluded the universe is still accelerating.
NASA confirmed August 30, 2026 as the launch date for the Nancy Grace Roman Space Telescope - eight months early. The wide-field infrared observatory will survey 100 million stars and is expected to catalogue approximately 2,500 new exoplanets.
