Definition of asthenosphere : a zone of a celestial body (such as the earth) which lies beneath the lithosphere and within which the material is believed to yield readily to persistent stresses asthenospheric
Fraser: Right. Pamela: And so any time you hear a noise in space, if you hear explosions, thatâs probably your own spacecraft, and the noise is transferring through the hull and through the air in your spacecraft. Other than that, youâre not going to hear explosions.
A supernova lasts between one to two years. This type of explosion usually happens because the core of the star has collapsed in on itself. The collapse happens in about less than a second, then the outer layers of the star are blown off in a mighty explosion.