Intermediate Word:  catacomb   (a) burial tunnel under city  (b) comb with coarse teeth on one side, fine teeth on the other  (c) fur ruff on the civet cat  (d) limestone cavern
Difficult Word: -soteriology   (a) study of ceramics and glasses  (b) study of the relationship between natural forces and human history  (c) science of tectonic processes  (d) doctrine of Christian salvation

The Power of Light: An Airborne Laser for Missile Defense - SpaceDaily  Under development since 1996, the $1.1-billion ABL project aims to use a powerful, turret-mounted laser to disable enemy ballistic missiles during their boost phase by heating a basket-ball sized portion of the projectile's skin until it buckles. The COIL system is fueled by a syrupy mix of hydrogen, oxygen and salts that combine to make Basic Hydrogen Peroxide, a volatile compound about 20 times more viscous than water, MDA officials said.     
X-43A Scramjet Test Flight Just Shy Of Mach 10 - SpaceDaily  "Once again we have made aviation history," added Vincent Rausch, the X-43A program manager, who spoke after it was announced that the scramjet had nearly reached Mach 10, or almost 3.2 kilometers (two miles) per second. "This flight is a key milestone and a major step toward the future possibilities for producing boosters for sending large and critical payloads into space in a reliable, safe, inexpensive manner," NASA Administrator Sean O'Keefe said in a statement. The scramjet is only 3.65 meters (12 feet) long, with a wingspan of 1.5 meters (five feet).   

NASA Reenters The Rocket Science Game - SpaceDaily  Left:  In a typical NASA project $50 million barely covers the cost of the artwork. NASA is taking a cue from the private sector and stepping up plans to award prize money for space missions, technology demonstrations and student outreach contests, while at the same time looking for partners to help run the competitions. Robert Bigelow, a hotelier and aspiring space tourism developer, has offered a $50 million purse for what he calls America's Space Prize. The winner will fly a vehicle capable of carrying at least five people to an altitude of 260 miles (400 kilometers) - about the altitude of the International Space Station - twice within 60 days. 

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