If the receiver of an anonymous message is taken to be the adversary, then their best guess from a set of candidate senders ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

A preliminary assessment by the Indian authorities said fuel was cut off to both engines shortly before Air India Flight 171 crashed last month, appearing to rule out mechanical failure or design ...

China's "Bohai Sea Monster" revives ekranoplan tech for maritime logistics, with low-altitude flight and South China Sea ...