The Milky Way's Dark Halo is Flattened and Twisted ⚡ экспресс
Original: "A Vertically Orientated Dark Matter Halo Marks a Flip of the Galactic Disk"
The invisible envelope of dark matter around the Milky Way turns out to be flattened and twisted — like a deflated ball, rotated crosswise to the disk.
Links in the knowledge graph 1
The Milky Way's dark halo is squashed from the sides, and its long axis stands perpendicular to the stellar disk. This suggests that our disk once flipped under the gravity of small satellite galaxies. This invisible 'lens' explains the mysterious plane of dwarf galaxies.
🎯 There is five times more dark matter than ordinary matter. Without its invisible gravity, galaxies would fly apart from centrifugal force.
q_{\rm DM} = Z/X
The ratio of height (Z) to length (X) of the dark halo. Shows how flattened it is.