Astronomy

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Readers respond to microbe counts, engineered organs and how to map the universe.

Astronomy

“Black holes” in space

Science News Letter was the first publication to use the term in print in 1964.

Astronomy

Enormous cosmic lens magnifies supernova

Galaxy warps light of distant exploding star, greatly increasing its brightness.

Astronomy

Earth-mass planet resembles a mini-Neptune

KOI-314c, an exoplanet 200 light-years away, is about 60 percent larger than Earth but made mostly of gas.

Astronomy

Supernova is a dust factory

Grains of matter spewed by stellar explosion offer clues to early star formation.

Astronomy

Unusual three-star system promises new test of gravity

A unique stellar threesome could help astronomers test the leading theory of gravity to unprecedented precision.

Astronomy

Relic of early universe found nearby

A galaxy little changed since the dawn of the universe shows up in our celestial neighborhood.

Astronomy

Signs of cloudy skies seen in two exoplanet atmospheres

Exoplanets GJ 436b and GJ 1214b have signatures of clouds in their atmospheres, but the skies are like nothing seen in the solar system.

Cosmology

Best maps of the universe, bugs and all

Maps from the European Space Agency’s Planck satellite reveal the cosmos in a range of microwave and infrared frequencies.

Astronomy

Top exoplanet finds of 2013

Here are some of the year’s most notable finds.

Astronomy

Space station pump fixed after two spacewalks

The repair allowed astronauts to restore power to the labs and experiments running on the space station.

Astronomy

Year in Review: Meteorite makes an impact

A falling rock delivers a wake-up call.