Europa tagged posts

On present-day Europa, the researchers expect water could reach as deep as 25 kilometers (15 miles) into the rocky interior, driving key chemical reactions throughout a deeper fraction of Europa’s seafloor. Credit: NASA/JPL/University of Arizona

The ocean of Jupiter’s moon Europa could have the necessary balance of chemical energy for life, even if the moon lacks volcanic hydrothermal activity, finds a new study. Europa is strongly believed to hide a deep ocean of salty liquid water beneath its icy shell. The answer may hinge on whether Europa has environments where chemicals are matched in the right proportions to power biological processes. Life on Earth exploits such niches.

JPL scientists compared Europa’s potential for producing hydrogen and oxygen with that of Earth, through processe...

Every morning in late October, Venus, Jupiter, and Mars will rise in the east an hour or so before the sun. Together, they form a triangle in the pre-dawn sky. Venus and Jupiter are the brightest vertices – visible even after the black pre-dawn sky turns cobalt blue. Once you find them, you will have little trouble locating the dimmer Red Planet, which completes the triangle while the sky is still black.

Although any morning in late October is a good time to look, the six day stretch from Oct. 24th – 29th is the best. That’s because during this time, the triangle of planets will shrink until it is less than 5 degrees wide.

Typical binoculars can see a patch of sky about 6 or 7 degrees wide...