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Galaxy

Analysis and Comment (4)

Gemini North observatory, on Hawaii’s Mauna Kea, shoots a laser beam into the night sky to create an ‘artificial star’, part of a process that helps astronomers remove blurring from any images of galaxies. Gemini Observatory and Association of Universities for Research in Astronomy

Laser helps find supermassive black hole in a small galaxy

A supermassive black hole has been found in an ultracompact dwarf galaxy – the smallest galaxy known to contain such a massive black hole. This finding, published today in Nature, suggests that supermassive…
Virgo consortium: the web that holds the galaxies together. Rich Murray

Filaments that bind galaxies together illuminated by a quasar

According to cosmologists, galaxies are joined together by filaments, quite literally. These filaments form the cosmic web and are made of mostly dark matter, many stars and some gas. Observing these filaments…
New research shows supermassive black holes are bigger than the sum of their parts. NASA/CXC/A.Hobart

When galaxies collide: the growth of supermassive black holes

Galaxies may look pretty and delicate, with their swirls of stars of many colours - but don’t be fooled. At the heart of every galaxy lies a supermassive black hole, including in our own Milky Way. Black…

Research Briefs (7)

Faster spinning galaxies are flat, not fat

The speed at which spiral galaxies spin determine whether they are fat and bulging or whether they are shaped like flat discs…