Discussion and news about planets, exoplanets, and astrobiology
Two new studies hint at a richer picture of what’s happening on Saturn’s extraordinary icy moon Enceladus. At about 500 kilometers in diameter, Enceladus is a diminutive natural satellite...
What happens when you make a low-level flyby of a cometary nucleus? You get jaw-dropping images. The above 2-shot mosaic of Comet 67P/Churyumov-Gerasimenko was taken by ESA’s Rosetta orbiter at an effective altitude of just 19.9 kilometers...
A United States federal agency is not necessarily the first place you think of when it comes to answering some of the deepest existential questions for our species...
A recent article by Samuel Arbesman in the science magazine Nautilus discusses the extraordinary sounding possibility that – just perhaps – a search for extraterrestrial intelligence could be made by looking at our DNA...
Gravity, as the old joke goes, sucks. It drags us down, pulls on our weary limbs, makes our feet tired, makes parts of us droop. But it’s also a critical factor for our long term well-being...
We live a mere 93 million miles from an enormous fusion reactor. It’s easy to overlook this, after all the Sun is only about halfway through its long slog of converting protons into helium nuclei deep inside its core...
In an idle moment, while staring at a set of solar system data, it occurred to me that it might be interesting to display a set of planetary surfaces on an equal footing, where the overall texture of these worlds was visible (although topography is probably a more [...]..
Enceladus, Europa, Ganymede, Titan, Triton, Pluto, Eris…they may all have, or have had, large oceans of liquid water trapped beneath a frozen crust.
Astrobiology has one key advantage when it comes to tooting its own horn – it can lay claim to a diverse range of scientific research as being relevant to the study of life in the universe...
Picture a hot volcanic spring. Mineral-laden acidic water flows through sulfur-rich rocks. A foul odor hangs in the air. For us it’s a nasty environment, best enjoyed through the lens of a tourist’s camera...
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