An asteroid estimated to be the size of three football fields whizzed close to Earth on Monday, roughly a year after one exploded over Russia and injured 1,200 people.
A new iPad app has been developed, which allows people to click telescope images of celestial objects from the comfort of their couch.
Apophis, an asteroid with an estimated diameter of almost three football fields (270m), will make its close approach to Earth this week.
Day in Pics: 31st January
Showbiz World - January 31, 2015
Playboy Super Bowl XLIX Party