Astronomy
- 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.
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- 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.
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- Astronomy
Year in Review: Visitor from the Oort cloud
A visitor from the outer solar system flies past the sun.
- Cosmology
Year in Review: Dark energy gets more confusing
New data raise the prospect of a ‘Big Rip’ destroying the cosmos.
- Planetary Science
Year in Review: Methane shortage on Mars
A trace of the gas is not enough to be a sign of life.
- Astronomy
Year in Review: Death of a planet hunter
The Kepler space telescope finishes a brilliant career.
- Astronomy
Year in Review: Voyager 1 reaches interstellar space
The planetary probe is the first human-made object to break out of the heliosphere.
