Science news this week: Deadliest spiders, mysterious noises in space and 1.7 billion T. rexes


It has been a busy week in science information relating to animals, the place we found why a tiny leaping spider is such a foul actor, revised our greatest estimates for what number of T. rexes as soon as roamed Earth, and came upon how Australian authorities are doing to save koalas from chlamydia

Elsewhere, a mysterious noise 70,000 toes (21,000 meters) up within the environment is baffling scientists, whereas additional afield, the James Webb Area Telescope has noticed what could possibly be an historic “water world” in a close-by star system.