The scientists at Massachusetts Institute of Technology has
created a perfect mirror that will reflect 100 perfect of light shoning on it.
The reflecting device called photonic crystal mirror is made up of silicon
nitride punctuated with super-tiny holes(smaller than the wavelength of visible
length). When a specific frequency of red light was shone on the surface of
crystal at a angle of 35 degree, 100 percent of light reflected back as light
waves trying to enter the holes collided and cancelled each other out. These perfect mirror could be used in fiber optics to provide greater range and speed.
Opportunity, the intrepid NASA rover that spent 15 years on Mars climbing in and out of craters to gather evidence of the planet's watery past, has been brought down by tiny particles of dust. After weeks of trying to revive the veteran Mars rover in the wake of a blinding dust storm, NASA has given up on ever hearing from it again. It's a humble ending for a machine that survived a 300-million-mile journey through space, executed a hole-in-one landing, and set a record by driving more than 28 extraterrestrial miles. Opportunity's last transmission to Earth occurred on June 10 amid an epic Martian dust storm. Still, NASA engineers remained hopeful that when the dust settled, the rover would recharge its solar-powered batteries and resume its superlative mission. Opportunity landed on Mars in January 2004 for a mission that was supposed to last 90 Martian days. Its twin rover, Spirit, had landed three weeks earlier on the other side of the planet. "Wit
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