Remnants

The Andromeda galaxy, which may have been growing by cannibalizing smaller galaxies.

Galactic cannibal Andromeda feasts on smaller galaxies, reveal cosmic remnants

Andromeda, the Milky Way’s neighboring spiral galaxy, may be a cosmic cannibal that grew by swallowing smaller galaxies. Astronomers came to this conclusion by observing a globular cluster of stars called the Dulais Structure, named after the Welsh term meaning “dark stream”, which now dwells in Andromeda but seems to come from outside galaxy. The …

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Andromeda contains the remnants of a recent "feeding event"

Andromeda contains the remnants of a recent “feeding event”

There is growing evidence that galaxies grow by merging with other galaxies. Telescopes like Hubble have captured dozens of interacting galaxies, including well-known galaxies like Arp 248. The Andromeda Galaxy is the closest large galaxy to the Milky Way, and a new study shows our neighbor has consumed other galaxies at two distinct epochs. “A …

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Astronomers discover the oldest planetary debris in our galaxy - the remnants of the destroyed solar system

Astronomers discover the oldest planetary debris in our galaxy – the remnants of the destroyed solar system

Artist’s impression of ancient white dwarfs WDJ2147-4035 and WDJ1922+0233 surrounded by orbiting planetary debris, which will accumulate on stars and pollute their atmospheres. WDJ2147-4035 is extremely red and dark, while WDJ1922+0233 is unusually blue. Credit: University of Warwick/Dr. Marc Garlic New study gives age of fainting white dwarf A white dwarf star is the remnant …

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Astronomers discover the oldest planetary debris in our galaxy - the remnants of the destroyed solar system

Astronomers discover the oldest planetary debris in our galaxy – the remnants of the destroyed solar system

Artist’s impression of ancient white dwarfs WDJ2147-4035 and WDJ1922+0233 surrounded by orbiting planetary debris, which will accumulate on stars and pollute their atmospheres. WDJ2147-4035 is extremely red and dark, while WDJ1922+0233 is exceptionally blue. Credit: University of Warwick/Dr. Marc Garlic New study gives age of fainting white dwarf A white dwarf star is the remnant …

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An artist

Remnants of oldest known solar system discovered just 90 light-years from Earth

The oldest dead star known to have had a system of rocky planets has been discovered just 90 light-years from Earth and provides insight into the makeup of worlds that formed nearly 11 billion years ago. The star is a so-called white dwarf, a stellar corpse that ran out of hydrogen in its core. Born …

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