By now everyone has heard of the recent detection of gravitational waves produced by two black holes colliding a billion miles away. By the time those waves reached us here on Earth they moved us (you, me, everything, the entire planet) a tiny fraction of the diameter of a proton. A. Proton. Not a fraction of an atom. A tiny, tiny fraction of a proton.

"Physicist Brian Cox of the BBC Two program Human Universe recently visited the world’s largest vacuum chamber at NASA’s Space Power Facility outside of Sandusky, Ohio, to demonstrate the effects of air on falling objects. In the video, a feather and bowling ball are dropped at the same time in normal Earth conditions and after the air has been removed from the room.

"Source: http://laughingsquid.com/a-feather-and-a-bowling-ball-dropped-together-i...

From the B612 Foundation:

Between 2000 and 2013, a network of sensors that monitors Earth around the clock listening for the infrasound signature of nuclear detonations detected 26 explosions on Earth ranging in energy from 1 to 600 kilotons – all caused not by nuclear explosions, but rather by asteroid impacts. These findings were recently released from the Nuclear Test Ban Treaty Organization, which operates the network.