Space
- Space
The great planet debate
New suggestions for defining a planet would put Pluto back on the list. Scientists discuss the International Astronomical Union’s definition during the Great Planet Debate Conference.
- Physics
Stars ablaze in other skies
A new study suggests that a surprising number of universes, even those with laws of physics different from those in our universe, can still support stars.
- Space
Sharpshooting Enceladus
Swooping within 49 kilometers of Saturn’s tiny, geologically active moon Enceladus, the Cassini spacecraft has pinpointed the locations of the icy geysers that erupt from the southern hemisphere of this wrinkled moon’s surface.
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- Space
Magellanic firestorm
To celebrate the Hubble Space Telescope’s 100,000th orbit about Earth, astronomers aimed the observatory at a firestorm of stellar activity in the Large Magellanic Cloud, a satellite galaxy of the Milky Way.
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- Astronomy
Invisible clumps in the galaxy
Model finds dark matter nearby and might shed light on the invisible material’s composition.
- Space
Surprising signal
Potential contaminant found on Red Planet does not rule out its prospect for habitability.
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- Astronomy
The Universe in a Mirror
The Saga of the Hubble Space Telescope and the Visionaries Who Built It.
- Space
Officially ice
Phoenix Mars Lander detects water, a landmark that, along with other successes, prompts NASA to extend the mission.
- Space
How a star is born
Researchers have developed a new and accurate simulation of the birth of the first stars in the universe.
