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We should shine lasers into space if we want to hide our presence from aliens, two US-based astronomers suggest. The beams could compensate for the dip in light the Earth creates when it passes in front of the Sun, as viewed from far-off worlds, they contend.
 extraterrestrial hide laser
Laser propulsion is a form of beam-powered propulsion where the energy source is a remote (usually ground-based) laser system and separate from the reaction mass.
 laser propulsion
The US has finished constructing a huge physics experiment aimed at recreating conditions at the heart of our Sun. The US National Ignition Facility is designed to demonstrate the feasibility of nuclear fusion, a process that could offer abundant clean energy. The lab will kick-start the reaction by focusing 192 giant laser beams on a tiny pellet of hydrogen fuel. To work, it must show that more energy can be extracted from the process...


 physics laser nuclear fusion energy
When the world's most powerful laser facility flicks the switch on its first full-scale experiments later this month, a tiny star will be born on Earth...


 physics laser fusion astronomy nuclear star diamond energy
EADS Astrium says the satellite system would collect the Sun's energy and transmit it to Earth via an infrared laser, to provide electricity...


 electricity power solar energy orbit space infrared laser
A major hurdle to producing fusion energy using lasers has been swept aside, results in a new report show. The controlled fusion of atoms - creating conditions like those in our Sun - has long been touted as a possible revolutionary energy source. However, there have been doubts about the use of powerful lasers for fusion energy because the "plasma" they create could interrupt the fusion...


 laser energy physics nuclear fusion ignition
Physicists have applied the same laser techniques commonly used for tattoo removal to clean several famous works of art, including wall paintings.
 laser cleaning art
The 50th anniversary of the first demonstration of a ruby laser at the Hughes Research Labs in the US.


 laser history technology science light
It uses a laser guidance system and specially developed 25mm high explosive rounds which can be programmed to detonate over a target.


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