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Two separate outflows in the dual supermassive black hole system NGC 6240
Treister, E.; Privon, G. C.; Davies, R. I. +3 more
Theoretical models and numerical simulations have established a framework of galaxy evolution in which galaxies merge and create dual supermassive black holes (with separations of one to ten kiloparsecs), which eventually sink into the centre of the merger remnant, emit gravitational waves and coalesce. The merger also triggers star formation and …
Evidence of ancient Milky Way merger
Venn, Kim
An analysis of data from the Gaia space observatory suggests that stars in the inner halo of the Milky Way originated in another galaxy. This galaxy is thought to have collided with the Milky Way about ten billion years ago.
Mars probe poised to solve red planet's methane mystery
Gaind, Nisha
Researchers hope European-Russian Trace Gas Orbiter will end a long-running debate over source of the gas on Mars.
A key piece in the exoplanet puzzle
Díaz, Rodrigo F.
The detection of a low-mass exoplanet on a relatively wide orbit has implications for models of planetary formation and evolution, and could open the door to a new era of exoplanet characterization.
Billion-star map of Milky Way set to transform astronomy
Castelvecchi, Davide
European Gaia spacecraft's first major data dump — the most detailed 3D chart yet of our Galaxy — will keep researchers busy for decades.
A fresh approach to stellar benchmarking
Beaton, Rachael
An avalanche of data is about to revolutionize astronomy, but the options for validating those data have been limited. High-precision measurements from the Hubble Space Telescope enable a much-needed alternative option.