Atom & Cosmos

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dwarf planet Makemake and newly discovered moon

A 2015 image from the Hubble Space Telescope reveals a faint moon orbiting the dwarf planet Makemake.

Hercules A galaxy

GALACTIC GEYSERS  Galactic fountains of gas, such as those erupting from nearby galaxy Hercules A, appear to be aligned among a dozen remote galaxies, a new study suggests. This image is a composite from the Very Large Array radio observatory (pink) and the Hubble Space Telescope.

Dwarf galaxy Reticulum II

HEAVY METALS  Scientists observed nine stars (circled) in the dwarf galaxy Reticulum II. Their data (shown for three stars) indicated the presence of heavy elements, formed through a sequence of reactions known as the “r-process.”

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