Why does #DarkMatter change the observed shape of #galaxies? 🌀 And by how much? What is #WeakGravitationalLensing and how does #ESAEuclid 🛰️ use this technique to map 📷 the matter distribution across the Universe? 

We have a new @cbd9aa75 blog post with a brief intro into this:

👉🏻 https://www.euclid-ec.org/mapping-the-dark-universe-with-gravitational-weak-lensing

#ESA #astrodon #astronomy #space #DarkEnergy