While slumming on Youtube, I came across
the below lecture on the formation of
terrestrial planets.

The Formation of Terrestrial Planets -
the 2nd Lobanov-Rostovsky Lecture in
Planetary Geology Published on Oct 8, 2016
[www.youtube.com]

Fortunately, the audio is increased
just before the main lecture begins.
Only the introduction is hard to hear.

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)