Particle.news

Download on the App Store

ESA’s Proba-3 Creates First Artificial Solar Eclipse in Space

Leveraging millimeter-precision formation flying, the mission captured unprecedented corona images with plans to extend each artificial eclipse to six hours under full autonomy.

Image
Image
This image provided by the European Space Agency depicts the two spacecraft of the Proba-3 mission aligning to create an eclipse to capture a coronagraph in space. (P. Carril/ESA via AP)
Image

Overview

  • Proba-3’s Coronagraph and Occulter satellites flew in formation 150 meters apart, maintaining alignment within a millimeter to block the sun’s disk.
  • The eclipse enabled the Coronagraph’s ASPIICS instrument to capture high-resolution images of the solar corona, enhancing insights into solar wind and coronal mass ejections.
  • The spacecraft can repeat artificial eclipses every 19.6-hour orbit and are now testing extended observation windows of up to six hours.
  • Having demonstrated autonomous alignment in March, the mission remains in its commissioning phase with a goal of achieving full autonomy for eclipse operations.
  • Early observations are being used to refine solar corona simulations and develop ‘digital eclipses’ that will improve space weather forecasting.