General Galactic, cofounded by a former SpaceX engineer, plans to test its water-based propellant this fall. If successful, it could help usher in a new era of space travel. That's a big “if.” ...

A newly discovered sungrazing comet C/2026 A1 is heading for a perilous close encounter with the Sun in April. If it survives ...

The growth in profit and margins was driven by operating leverage and seasonal strength in advertising-linked monetisation.

Print Join the Discussion View in the ACM Digital Library The mathematical reasoning performed by LLMs is fundamentally different from the rule-based symbolic methods in traditional formal reasoning.