Timescape

Serves as Peterson's intellectual guide through tachyon physics and the causal-loop interpretation, explaining Wheeler-Feynmann theory and the self-consistency resolution to the grandfather paradox.

Manipulative bureaucrat who extracts scientific briefings through social dominance, manages the tachyon project politically, and independently devises the safety-deposit-box test to verify tachyon communication.

Works alone in the dying Cambridge lab, feverish, transmitting personal Morse confessions, then detects signals from 2349 before the generator fails and he exits into daylight.

Faces professional ostracism after the Life article, re-detects the tachyon signal at 11 p.m., deduces its Hercules origin, resists Ramsey's co-option, and is eventually cornered by a UPI reporter.

Gordon's first wife; their marriage in 1964 follows a reconciliation after 1963, but the relationship deteriorates through 1968 and ends in divorce.

Hungarian-born physicist who built UCSD's NRL; politically cautious; first dismisses the signal as nonsense, then tries to co-opt it as publishable 'spontaneous resonance' to serve NSF renewal.

Gordon's graduate student; cleared off the NMR rig under the guise of research discipline so Gordon can run simultaneous experiments.

Marjorie's friend who arrives at the house and inadvertently defuses the squatter confrontation.

Accompanies Renfrew on outings, provides emotional lightness, and reconnects with curator Frost at the closed Institute for Astronomy.

Elderly curator who remained behind after the Institute closed; reports a break-in and theft from the library, emblematic of institutional collapse.

Marine biologist at Scripps who briefs Peterson on manodrin-driven diatom bloom and the threatened food chain; fit, ascetic, office-proud, eager for crisis details.

Astronomer who brings a Life magazine photographer to Gordon's lab, continuing to publicize their tachyon discovery without Gordon's endorsement.

Senior physicist who warns Gordon to distance himself from Shriffer and later passively supports Cooper's examination failure

Faculty committee member who sides with Lakin in failing Cooper, citing unresolved equipment questions

Woman Peterson dines and sleeps with; affected accent, East Anglian origins, presses him on politics, emotionally vulnerable after their encounter.

Physicist recruited by Peterson from Caltech; author of coupled field equations for tachyon paradox-loops; sardonic about Peterson.

University administrator who delivers the merit increase denial to Gordon with cautious vagueness and an Einstein anecdote.

Special Forces veteran and Penny's acquaintance; his beach appearance triggers Gordon's jealous flight.

Gordon's counterpart experimenter; urges him to sleep, promises to run measurements, but her group finds nothing.

Asks to use Gordon's chain-configuration in his press conference, is refused, then inadvertently exposes Gordon's role to a UPI reporter.

Long-serving household servant at Peterson's rural retreat; helps Peterson's elderly aunt to her seat and serves tea in silence.

Gordon's second wife, from the Bronx; energetic, loyal, and socially magnetic; she revitalizes Gordon at the Washington reception.

US President in the alternate 1974 timeline; presides over the awards ceremony and reads Gordon's citation.

Nobel-winning nuclear physicist seen at the Washington reception; aged and frail.

Co-recipient with Ramsey of an award at the ceremony; the two comedically swap their plaques.

Physicist whose new theory integrates tachyons into general relativity and resolves paradoxes through universe-splitting.