The gameplay is simple: Use different weapons to destroy incoming objects before they get passed you. (thevrgrid.com)
To find immediate threats, Tyson says, it is necessary to differentiate incoming objects from bodies locked in place in the asteroid belt. (discovermagazine.com)
In 2007, a similar collision with the Milky Way was projected for Smith's Cloud within 20 to 40 million years, which is now believed to be surrounded by a massive halo of dark matter so that the entire incoming object has a «tidal mass» of some 300 million Solar - masses. (solstation.com)