In Yalda's universe, light has no universal speed and its creation generates energy. On Yalda's world, plants make food by emitting their own light into the dar

In Yalda's universe, light has mass, no universal speed, and its creation generates energy; on Yalda's world, plants make food by emitting light into the dark n

In Yalda's universe, light has mass, no universal speed, and its creation generates energy; on Yalda's world, plants make food by emitting light into the dark n

The generation ship Peerless is suffering from a population explosion, and the only way to reduce the number of children is by drastically limiting the females'

In an alien universe where space and time play by different rules, interstellar voyages last longer for the travellers than for those they left behind. After si