A recent NASA story notes that the NEOWISE project, an unplanned extension of the Wide-field Infrared Survey Explorer (WISE), has found more potentially hazardous asteroids than initially estimated by scientists (also called PHAs by those government types who can find a acronym for anything - AFA). These PHAs can most likely make it through our atmosphere and do some serious damage below. NASA findings indicate there are about 4,700 PHAs with diameters larger than 330 feet. And where did they come from? Most likely collisions in the asteroid belt between Mars and Jupiter.
This could be good news for those who plan to mine the asteroids, such as Planetary Resources. The company has a simple mission:
Planetary Resources’ mission is clear: apply commercial, innovative
techniques to explore space. We will develop low-cost robotic spacecraft
to explore the thousands of resource-rich asteroids within our reach.
We will learn everything we can about them, then develop the most
efficient capabilities to deliver these resources directly to both
space-based and terrestrial customers. Asteroid mining may sound like
fiction, but it’s just science.
Whether or not we need to go so far for such resources is another question. Of course, this is something the private sector can decide. As Slate noted:
This space-mining venture is either going to be a spectacular success or
a spectacular failure. Either way, the emphasis will be on spectacular.
And the best part of all is that U.S. taxpayers won’t bear the risk if
these extraordinary plans fail to pan out.