article_snippet: Philae needs an internal temperature of more than minus 45 degrees Celsius (minus 49 degrees Fahrenheit) and at least five watts of power to automatically turn on.
article_snippet: Philae requires Philae internal temperature to reach at least -45 degrees C before Philae can wake up.
article_snippet: Philae will also require at least 5.5 watts from Philae solar panels to wake up.
article_snippet: To send we an answer, Philae must also turn Philae transmitter – and that requires additional power.'
article_snippet: Philae needs a total of 19 watts to begin operating and allow two-way communication.