So many planets, so few telescopes

Over the last few weeks, astronomers announced not one but two extraordinary discoveries in the ongoing search for planets orbiting stars beyond the sun. The first was a world about the size of Neptune, 5,000 light-years ...

Antarctica faces major threats in the 21st century: researchers

The continent of Antarctica is at risk from human activities and other forces, and environmental management is needed to protect the planet's last great wilderness area, says an international team of researchers, including ...

Getting to know the Goldilocks planet

NASA's Kepler spacecraft is discovering a veritable avalanche of alien worlds.  Recent finds include planets with double suns, massive "super-Earths" and "hot Jupiters," and a miniature solar system.  The variety ...

High planetary tilt lowers odds for life?

Highly-tilted worlds would have extreme seasons, subjecting life to alternating periods of scorching and subzero temperatures. This could make the development of all but hardiest, simplest creatures a long shot.

Earth's cloudy past could reveal exoplanet details

The pattern of clouds on Earth is largely determined by the arrangement of the continents below. Now, astronomers are modeling the clouds at different periods in Earth's past to better understand what alien worlds might look ...

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