The voice of a black hole is a deep, deep bass, 57 octaves below middle C and far beyond the hearing range of humans. The Chandra X-ray Observatory has picked up sound waves for the first time from a ...

The instrument plays only one note: B-flat. For reasons that are still unclear, this note is special and seems to crop up again and again in the oddest places. Here's a sampling of other places the "B ...

"A flat band in a band structure is a very special type of frequency band where the group velocity remains zero across all wavenumbers," Bilal explains. "In practical terms, this means that sound ...

Bigger speakers, bigger sound – this is the music lover’s creed. Flat panel loudspeakers offer an alternative to those who would rather not or cannot clutter up their homes with speakers. These ...

In the dark heart of the Perseus galaxy cluster, 300 million light-years from Earth, a supermassive black hole has been singing the same note for 2.5 billion years. Its tone registers 57 octaves below ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Big black holes sing bass. One particularly monstrous black hole has probably been humming B-flat for billions of years, but at a pitch no human could hear, let alone sing, astronomers said Tuesday.