Featured series 
Tag: planet
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Nation & World
How will the world end? Possibly with a belch, not a whimper.
Scientists say it’s a preview of Earth’s fate in 5 billion years.
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Nation & World
New destination for space-faring civilizations?
Globular star clusters date back almost to the birth of the Milky Way, and according to new research, they also could be extraordinarily good places to look for space-faring civilizations.
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Nation & World
Pluto’s demotion debated
In 2006, the International Astronomical Union demoted Pluto from its rank as a planet. But after an hourlong debate between planetary science experts on what constitutes a planet, an audience packed into Harvard’s Phillips Auditorium voted to restore it to its place.
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Nation & World
Intelligent Earth
Once its axis tilts, how does the Earth “know” to return to its normal orientation? Work by Harvard researchers provides some answers.
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Nation & World
Planet probe
In a paper published in the June 7 issue of Nature, Associate Professor Sujoy Mukhopadhyay presents evidence that the Earth’s deep mantle incorporated gas found in the solar nebula in the first few millions of years of the solar system’s formation.
