Sound has Mass and thus, Gravity?

Sound has Mass and thus, Gravity?

In order for sound to be affected by gravity and to exercise gravity, it has to carry some mass of its own. But our common observations showed that sound is vibration traveling through media; energy traveling through material carrying no mass of its own. Until now,...
The first photo of a Black Hole is almost here!

The first photo of a Black Hole is almost here!

These are exciting times to witness. Since 2017 we have been tracing the amazing international initiative called Event Horizon Telescope (EHT) in the hunt for Black holes in the Universe. Among other studies, the EHT aims at the obtention of the first real image of...
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