Planck Snaps Its First Images Of Ancient Cosmic Light
Sunday, September 20, 2009 - 02:28
in Astronomy & Space
Planck, the European Space Agency's mission to study the early Universe, started surveying the sky regularly from its vantage point at L2 on August 13. The instruments of ESA's "time machine" were fine-tuned for optimum performance in the period preceding this date. In preparation for routine scientific operations, their long-term stability has been verified by conducting a first trial survey.