galactic discs – Astronomy Now

GAIA data indicates ongoing collision causing Milky Way’s warp

4 March 2020 Astronomy Now

Data from ESA’s Gaia satellite suggests an ongoing collision with a dwarf galaxy may be responsible for distorting the Milky Way’s disc.

‘Godzilla’ galaxy, one of largest observed, hosts a trillion suns

6 January 2020 Astronomy Now

The Hubble Space Telescope is helping astronomers study one of the largest spiral galaxies yet found, a “Godzilla” galaxy hosting a trillion stars.

Simulated map of missing satellite galaxies could answer dark matter puzzle

23 July 2015 Astronomy Now

A ripple in the outskirts of the Milky Way led Rochester Institute of Technology astrophysicist Sukanya Chakrabarti to a previously undetected dwarf galaxy hidden under a veil of dark matter. Now Chakrabarti is refining her technique to uncover dwarf galaxies and understand dark matter by simulating the evolutionary histories of galactic discs and their satellite populations.