The Euclid space telescope, recently launched by the European Space Agency , has been having some problems during its commissioning phase. Issues with its Fine Guidance Sensor were preventing the telescope from locking onto the stars it needs to use as guides to make sure it is pointed in the right direction, requiring engineers on the ground to come up with a new software version.
The telescope is in orbit around the sun at Lagrange point L2, and is designed to study the dark universe — that is, dark matter and dark energy. To do that, it observes the entire night sky to measure the shapes of galaxies and to create a 3D map of dark matter across the universe. For this, it needs very high accuracy that requires high precision and stability, which is part of why the Fine Guidance Sensor is so important.
With the new software patch in place, the starfield images collected now should be sharp and accurate.