51 U.S.C. § 71102

Requests for information

The Administrator shall issue requests for information on—

(1)

a low-cost space mission with the purpose of rendezvousing with, attaching a tracking device, and characterizing the Apophis asteroid; and

(2)

a medium-sized space mission with the purpose of detecting near-Earth objects equal to or greater than 140 meters in diameter.

( Pub. L. 111–314, § 3 , Dec. 18, 2010 , 124 Stat. 3439 .)