IFLScience
shared a link post in group #IFLScience
www.iflscience.com
Listen To The Echo Of Our Supermassive Black Hole's Most Recent Flare
It is a giant weight over four million times the mass of the Sun.
Comment here to discuss with all recipients or tap a user's profile image to discuss privately.
Embed post to a webpage :
<div data-postid="gwxymkb" [...] </div>