Editing Kardashev scale (section)

=== Type I ===
A civilization "close to the level currently achieved on Earth, with an energy consumption of ≈4{{e|19}}&nbsp;[[erg]]/sec" (4{{e|12}}&nbsp;watts).<ref name=Kardashev-1964/> A Type&nbsp;I civilization is usually defined as one that can harness all the energy that reaches its home planet from its parent star (for Earth, this value is about 2{{e|17}}&nbsp;watts), which is about four [[Order of magnitude|orders of magnitude]] higher than the amount currently achieved on Earth, with an energy consumption of ≈2{{e|13}}&nbsp;watts by 2020. The astronomer Guillermo A. Lemarchand defined Type&nbsp;I as a level close to today's terrestrial civilization, with an energy capacity equivalent to Earth's [[solar irradiance]], between {{10^|16}} and {{10^|17}}&nbsp;watts.<ref name="Lemarchand">{{Cite web |url=http://www.coseti.org/lemarch1.htm |title=Detectability of Extraterrestrial Technological Activities |first=Guillermo A. |last=Lemarchand |publisher=Coseti |access-date=2004-10-23 |archive-date=2019-03-18 |archive-url=https://web.archive.org/web/20190318193634/http://www.coseti.org/lemarch1.htm |url-status=live}}</ref>