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Questions tagged [laser]

Questions regarding devices which emit focused beams of electromagnetic energy.

7 votes
1 answer
141 views

Technological challenges in substituting EO Satellites X-band downlinks with laser downlinks?

The majority of Earth Observation satellites, whether for meteorology or land analysis, downlink their data in the X-Band to either government-run or privately-owned ground stations. In Europe, the ...
Maria Angeles Capellades's user avatar
5 votes
2 answers
229 views

Is it feasible for a future Rosetta type mission to use wireless transfer of power to Philae?

While listening to the latest updates it seems like there is a limited 60 hour battery capacity left for Philae. There seems to be some information on the web on wireless power transfer using lasers. ...
Mohammad's user avatar
  • 225
7 votes
1 answer
543 views

How much power loss does the LLCD suffer in transit?

Space.com writes to say (freeform improved quote): The LLCD (Lunar Laser Communication Demonstration) space terminal is designed to beam data from the moon at a rate six times faster than the best ...
Everyone's user avatar
  • 13.6k
11 votes
4 answers
5k views

Laser propulsion possible?

Is it possible to get an impulse, if you shoot at a solar sails with lasers mounted on the spaceship? If so, why doesn't a laser create a force, if it fires/releases a photon? Is the impulse ...
Quonux's user avatar
  • 421

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