The Laser is the seventh Physical <l:6,66>Advance<e>, important for both scienctific and military staff. If allows the Civilization to build the <l:3,29>SETI Project<e>, an ambitious program which boosts <l:6,97>science<e> throughout the Civilization. On a more mundane level, it enables the <l:1,36>SDI Laser<e>, a unit with only moderate firepower but able to reach the Earth's orbit.