ESA approves €320 million ARRAKIHS telescope to map faint galactic halos and stellar streams
By
Jay Bennett
Summary
The European Space Agency (ESA) has approved a new €320 million space telescope called ARRAKIHS, set to launch on 10 June, to study the faint stellar halos and streams surrounding galaxies. These structures are remnants of dwarf galaxies torn apart by larger galaxies' gravity, and by mapping them, scientists aim to test models of galaxy formation and probe the role of dark matter in shaping galaxy growth.
Source
Twitter / XESA approves €320 million ARRAKIHS telescope to map faint galactic halos and stellar streamsscim.agKey quotes
· 4 pulledOn 10 June, the European Space Agency (ESA) approved a new space telescope to study the dim halos and wispy streams of stars that surround galaxies.
Called ARRAKIHS, the €320 million mission will map these faint structures to test models of galaxy formation.
Stellar streams are the remnants of dwarf galaxies that have been torn apart by the larger galaxy's gravity.
By measuring the properties of these relics, scientists can untangle past mergers and probe the dark matter shaping galaxy growth.
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