Cretaceous-Paleogene extinction event

src: 1.bp.blogspot.com The Cretaceous-Paleogene ( K-Pg ) extinction event , also known as the Cretaceous-Tertiary ( K-T ) extinction , was...

99942 Apophis

src: i.ytimg.com 99942 Apophis ( , previously known by its provisional designation 2004 MN 4 ) is a near-Earth asteroid that caused a brief...

Chelyabinsk meteor

src: upload.wikimedia.org The Chelyabinsk meteor was a superbolide caused by an approximately 20-metre near-Earth asteroid that entered Ear...