Under the working 1.5g brachistochrone model, Hail Mary reaches its halfway point, peaks in velocity, and flips to decelerate toward Tau Ceti.
Date Calculation
Trace the formula back to its fixed date.
c. September 20, 2025
Hail Mary reaches outbound midpoint turnover and begins decelerationFormula
c. March 22, 2019
Hail Mary launches from EarthFormula
c. March 19, 2019
Grace is forced onto Hail MaryFormula
c. July 15, 2018
Astrophage discovered via ArcLightFormula
c. July 15, 2017
Petrova line discoveredFormula
March 21, 2032
Grace wakes on Hail MaryEvent Context
Move through the universe chronology and nearby relationships.
Relationships
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May 22, 2026 at 11:59 PM
May 23, 2026 at 07:05 AM
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