Mysterious invisible walls may have been discovered in outer space
The walls aren’t necessarily like the walls of a room. Instead, they are more like barriers
NASA recorded a Black Hole’s song & you can listen to it (audio)
NASA scientists have been capturing sounds across the universe from the screams of Black Holes to the gassy outbursts of distant star
Hubble’s “magnum opus”: most precise measurement of universe’s expansion (photo)
We have known for the better part of a century that the universe is expanding by the observation that galaxies are moving away from us
