Space NASA's Chandra Observatory Spots Galaxy Clusters' Collision Abell 2146 is a pair of colliding galaxy clusters located nearly 2.8 billion light-years from our planet. Galaxy clusters contain hundreds of galaxies along with huge amounts of dark matter and hot gas.
Space NASA Shares a New Panorama of the Center of the Milky Way It is noted that our own galaxy is difficult to study, as it is hidden by a fog of gas and dust. But the researchers were able to penetrate it precisely with the help of the X-ray observatory Chandra, which sees X-rays instead of visible light.
