President Obama last week signed the U.S. Commercial Space Launch Competitiveness Act, which governs ownership of asteroid resources, possibly triggering a new battle in the commercial space race. Section 5103 of the Act gives U.S. companies the right to resources mined from asteroids, although it does not give them rights to the asteroids themselves. News of the president’s signing drew applause from Planetary Resources, a 5-year-old asteroid mining company.