The consequences go far beyond merely the loss of two pieces of property. Each satellite weighed more than half a metric ton and was moving at 7.5 kilometers per second. The resulting explosion was catastrophic (灾难性的), generating a massive cloud of cosmic debris—perhaps 100, 000 pieces of junk bigger than one centimeter in diameter, estimates David Wright, a space expert at the Union of Concerned Scientists. In one stroke, the accident increased by nearly a third the number of stray objects in the crucial 700 - to - 900 - kilometer band known as low Earth orbit (LEO). The junk cloud will eventually disperse around the entire planet, like a shroud(遮蔽物). According to David Wright’s estimation, the explosion of the two satellites may result in
A. 100,000 pieces of junk bigger than one centimeter in diameter. B. a massive cloud of cosmic debris beyond the low Earth orbit. C. a cloud of cosmic debris like a shroud around the sun. D. a third of the number of stray objects in the low Earth orbit.