The space rock flying by Thursday is thought to be a dead comet as big as the Burj khalifa
asteroid
Some missions might even need to be launched a year before impact
Discovered last week by the US space agency
When the asteroid flies towards us again in November 2018, it will be 105 times the average lunar distance away
Originally thought to be a comet, the mysterious visitor came so close to our star that it should have likely burned up, but it didn’t
How should we name it?
NASA has said that supervolcano eruptions are a bigger threat to life than any asteroid
NASA says no danger
The ESA says it is far enough to just miss our geostationary satellites orbiting
Would change global economy, but how could you tow it into orbit and mine it?