Chelyabinsk Meteor Played 4.5 Billion Years of Cosmic Pinball
A new study of fragments from the Chelyabinsk meteor reveal that it went through at least eight impact events spread across the last 4.5 billion years before it ended up impacting Earth
Life, Unbounded
Discussion and news about planets, exoplanets, and astrobiology
![Philae's Real-Time Descent and Enceladus's Global Ocean [Video]](https://static.scientificamerican.com/blogs/cache/file/01948C21-AA2B-41CF-B412B82012DDDD4E_agenda.jpg?w=275&h=154&fit=crop)
Philae's Real-Time Descent and Enceladus's Global Ocean [Video]
This week brings a video reconstructed from images of the Philae lander's approach to a comet, and a major new analysis of data from the Cassini mission that bolsters the case for a global, not just local, ocean beneath the icy crust of Enceladus...
Having an Existential Crisis? It Could be Worse, and Weirder
Living on a small planet in a big universe exposes us to all manner of existential problems, but what are the worst, and what are the weirdest?
Archimedes, 3 Trillion Trees and Life in the Universe
A new estimate of Earth's total tree population shows previous estimates were seven times too low, and there are implications for efforts to understand the nature of life here and elsewhere in the universe...
A New Billion-Mile Journey for New Horizons
NASA's New Horizons team decide on their next target, a classical Kuiper Belt object that can be reached by January 2019, but the agency must still approve funds for this extended science mission...
Just How Resilient Is Spacetime?
A hundred years on, and the implications of Einstein's general relativity still surprise and delight
3 Years into Its Mission, Curiosity's Stunning Martian Panorama
NASA's Curiosity rover provides a beautiful, scientifically appetizing view of what's ahead on Mount Sharp on Mars
A New Era for Origins of Life Science?
A new effort to bring global cohesion to origins of life science launches, and with it a fresh look at how to crack one of the greatest existential questions.
Would You Bet Your Species on "Earth-Like"?
The announcement of a newly confirmed exoplanet in Kepler data within its star's "habitable zone" is great news, but also reinforces some misconceptions about what an Earth-like world means...
Pluto's Barnacled Beauty
Early images from New Horizons' encounter with Pluto reveal an extraordinary surface of strange mountains and varying deposits of light and dark material
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A Blog About the Weird Wonderfulness of Life on Earth
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Exploring and celebrating diversity in science.
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