Monthly Archives: December 2021

Stardust was a robotic space probe launched in 1999, with the primary mission of collecting cosmic dust and dust samples from the comet Wild 2 and returning them to Earth.

Gaia is a space observatory launched on December 19, 2013, by the European Space Agency (ESA), designed to measure stars' positions, distances, and motions with precision.

The Imaging X-ray Polarimetry Explorer, IXPE, is a space observatory that was launched on December 9, 2021, designed to measure the polarization of cosmic X-rays.