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Editors of EarthSky

New image of red nebula 7,300 light-years from Earth

In the middle of little-known nebula Gum 41, brilliant hot young stars are giving off energetic radiation that causes the surrounding hydrogen to glow red.

First potentially habitable Earth-sized planet discovered

The first Earth-sized exoplanet orbiting within the habitable zone of another star has been confirmed. The new planet, dubbed Kepler-186f, was discovered using NASA’s Kepler telescope.

Did vitamin B3 come from space?

Vitamin B3 - a vitamin essential to metabolism - might have been made in space and delivered to Earth by meteorites.

New cross section of the universe

New Hubble image shows objects ranging from cosmic near neighbors to objects seen in the early years of the universe.

Cosmic slurp: Where a black hole swallows a star

Astronomers have identified galaxies where a central black hole just disrupted and ‘ate' a star. It's like a black hole putting up a sign that says: Here I am.

Unexpected teleconnections in noctilucent clouds

Researchers investigating "night-shining" clouds found something they weren't even looking for: teleconnections in Earth's atmosphere that stretch all the way from the North Pole to the South Pole and back again

Large Hadron Collider discovers new form of matter

Researchers say that exotic hadrons -particles made up of two quarks and two anti-quarks - actually exist.

A tetrad of lunar eclipses, next one October 8

Monday's eclipse marks the beginning of a special eclipse series known as a tetrad - four total lunar eclipses in a row, with no partial eclipses in between. The next one is October 8.

Is Saturn making a new moon?

A small icy object within the rings of Saturn might be a brand new moon in the process of being born.

Beauty from chaos on Mars

Catastrophic flooding is thought to have created the heavily eroded Osuga Valles on Mars ... and the features within it.