A vast and powerful space weather event has been observed at the solar system's innermost planet for the first time. Continue reading →
By now we've all realized that NASA's Mars rover Curiosity is a fine geologist. It's also a great geochemist. And now, once again, the six-wheeled rover has underlined the fact that it's a pretty damned good astronomer, too. Continue reading →
In several species of shark, levels of toxic chemicals found to be 10 times higher than what's considered safe.
This month, stargazers have a chance to see the five brightest planets in the sky, weather permitting.
It's been 40 years since we first saw Mercury up close, and the flyby raised more questions than it answered.
An obsolete theory of the Earth works better than ever on Mercury, where new data reveals how much the hot little planet has shriveled since it first formed.
Even though the California Gold Rush took place more than a century ago, it left a toxic legacy of mercury pollution.
Despite new evidence that fish is safe for pregnant women, researchers continue to urge caution about the kinds of fish women choose to eat.
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