Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00584-y
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The committee said the number of lives saved by screening does not outweigh its harmful effects on healthy men.
Launch had been planned for early February, but it was delayed to repair a hydrogen leak and, more recently, to give engineers time to fix a helium pressurization problem in the rocket's upper stage. Launch is now on hold until at least April 1.