What could be the cause of this excessive gravitational pull? A volcano, or perhaps something else?
Stream Full Episodes of What on Earth?:
https://www.sciencechannel.com/tv-shows/what-on-earth/
Subscribe to Science Channel:
http://bit.ly/SubscribeScience
Like us on Facebook:
https://www.facebook.com/ScienceChannel
Follow us on Twitter:
Tweets by ScienceChannel
Follow us on Instagram:
https://www.instagram.com/ScienceChannel/