THE SUN IS ABOUT TO LOSE ITS MEMORY: aa index (a record of geomagnetic activity stretching back to 1844) and found that after odd-numbered solar cycles, the sun forgets what happened in the past.
We’re approaching such a moment now, as Solar Cycle 25 descends from its peak.
Their research begins with the little-known “Gnevyshev-Ohl rule .” Discovered in 1948, this rule says that solar cycles come in pairs, with the odd-numbered half stronger than the even. Take a look at this historical plot of sunspot numbers:
Once you notice the Gnevyshev-Ohl rule, you can’t unsee it. With only one exception in the past 180 years (Solar Cycles 22-23), odd cycles are always stronger than evens. The current pair, Cycles 24-25, definitely follow the rule.
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Locus forthcoming books
SEPTEMBER 2026
K. ANCRUM • Adam • Mine., HarperCollins, Sep 2026 (ya, h, hc, eb)
GUY ASTIC & FRANK LAFOND • The Art and Craft of Stephen King • Hachette/Black Dog & Leventhal, Sep 2026 (nf, hc)
LEIGH BARDUGO • Dead Beat • Orion UK/Gollancz, Sep 2026 (h, hc, eb)
LEIGH BARDUGO • Dead Beat • Macmillan/Flatiron, Sep 2026 (h, hc, eb)
KALYNN BAYRON • Tell the Ghosts I’m Gone • Bloomsbury USA, Sep 2026 (ya, v, hc, eb)
KAMILAH COLE • Wicked Endeavors • Little, Brown, Sep 2026 (ya, hc, eb)
ELLEN DATLOW, ED. • All Hallows Eve • Titan Books UK, Sep 2026 (oa, hc, eb)
TANANARIVE DUE • Mazywood • Simon & Schuster/ Saga Press, Sep 2026 (h, hc, eb)
TANANARIVE DUE • Mazywood • Titan Books UK, Sep 2026 (h, hc, eb)
ZOÉ DUHAIME • The Lost Spectacular • Kensington/Erewhon, Sep 2026 (hc, eb)
ZOÉ DUHAIME • The Lost Spectacular • Rebellion/ Solaris UK, Sep 2026 (hc, eb)
JESSICA DAY GEORGE • Holidays at the Castle • Bloomsbury USA, Sep 2026 (ya, tp)
CHRISTOPHER GOLDEN • Carry Me to My Grave • Titan Books UK, Sep 2026 (1st US, h, tp, eb)
FRANCES HARDINGE • Traitors’ Nest • Abrams/Amulet, Sep 2026 (1st US, ya, art, hc, eb)
KATE HEARTFIELD • The Swordmaster • Rebellion/Solaris UK, Sep 2026 (tp, eb)
JAMES ISLINGTON • Scion • Simon & Schuster/Saga Press, Sep 2026 (hc, eb)
AI JIANG • An Empire in the Clouds • Titan Books UK, Sep 2026 (hc, eb)
ALMA KATSU • Incarnate • Penguin Random House/Putnam, Sep 2026 (h, hc, eb)
T. KINGFISHER • Baldur’s Gate3: Astarion • Penguin Random House/Random House Worlds, Sep 2026 (x, hc, eb)
KEN LIU • The Passing of the Dragon and Other Stories • Simon & Schuster/ Saga Press, Sep 2026 (c, hc, eb)
JOSH MALERMAN • Pictures of You • Macmillan/Tor Nightfire UK, Sep 2026 (h, hc, eb)
JOSH MALERMAN • Pictures of You • Penguin Random House/Del Rey, Sep 2026 (h, hc, eb)
FREYA MARSKE • Bodies of Magic • Macmillan/Tor Bramble UK, Sep 2026 (hc, eb)
FREYA MARSKE • Bodies of Magic • Tor/Bramble, Sep 2026 (hc, eb)
A. LEE MARTINEZ • Unbearable • Baen, Sep 2026 (hc, eb)
SEANAN MCGUIRE • A Divided Duty • Tor, Sep 2026 (hc, eb)
CHINA MIÉVILLE • The Rouse • Penguin Random House/Del Rey, Sep 2026 (hc, eb)
CHINA MIÉVILLE • The Rouse • Macmillan UK/Picador, Sep 2026 (hc, eb)
PREMEE MOHAMED • Wickhills • Tor, Sep 2026 (hc, eb)
LOUISA MORGAN • The Faerie Handmaid • Orbit US/ Redhook, Sep 2026 (tp, eb)
GARTH NIX • Massif • Harper Voyager US, Sep 2026 (hc, eb)
GARTH NIX • Massif • Orion UK/Gollancz, Sep 2026 (hc, eb)
AVA REID • Winterveil • HarperCollins, Sep 2026 (ya, hc, eb)
JONATHAN STRAHAN, ED. • Revolution in the Heart • Titan Books UK, Sep 2026 (oa, hc, eb)
DAVAUN SANDERS, ED. • Forged in FIYAH • Tordotcom, Sep 2026 (an, tp, eb)
SHAUN TAN • Hometown • Levine Querido, Sep 2026 (gn, ya, art, hc, eb)
ADRIAN TCHAIKOVSKY • Engines of Reason • Macmillan/Tor UK, Sep 2026 (na, eb)
ADRIAN TCHAIKOVSKY • Engines of Reason • Tordotcom, Sep 2026 (na, hc, eb)
PETER WATTS • Fold Catastrophes • Tachyon Publications, Sep 2026 (c, tp, eb)
OCTOBER 2026
Montreal Science Fiction and Fantasy Association
