The call that comes back as a map A bat leaving its roost at dusk emits ultrasound pulses at frequencies between 20 and 200 ...

A new technique will enable astrophysicists to study the strength of extreme gravity at the black hole’s horizon. Credit: Australian National University On a January morning in 2025, a ripple in the ...

Fiber-optic cables detect silent whales by reading the faint pressure wave a swimming body pushes through the water, a 2026 ...

When a bright fireball streaked across the Alaska sky last spring, the usual tools scientists rely on to track such ...

After more than a century, an era comes to an end as the world's longest-running long-wave radio service shuts down. On June ...

A plane built by Nasa has broken the sound barrier without producing a sonic boom, bringing civilian supersonic flights a ...

SpaceX’s Falcon 9 launches the SiriusXM SXM-11 mission, sending the rocket into the sky as its roar carries across the ...

A 100-year-old equation and a fibre-optic cable off the coast of Svalbard led researchers to discover they could detect ...

A 100-year-old equation and a fiber-optic cable off the coast of Svalbard led researchers to discover they could detect swimming whales—even if they were completely silent. The discovery broadens the ...

From a headstay failure near Newport to a tangled halyard at dusk, offshore racing delivers its education without apology.

Calculate sound wavelength from frequency, medium, and temperature, then translate it into half-wave spacing, quarter-wave acoustic depth, period, phase distance, and room-mode relevance. Core formula ...