Galileo Galilei discovered Jupiter's moon Europa in 1610. More than four centuries later, astronomers are still making discoveries about its icy surface. With a diameter of almost 2,000 miles, an orbit equivalent to 3.5 Earth ...
Space Exploration
May 15, 2018
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A snapshot of Europe's Galileo space-based navigation system which went online Thursday, designed to be far more precise than its US military-run rival GPS.
Space Exploration
Dec 15, 2016
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After 17 years, numerous setbacks and three times over budget, Europe's Galileo satnav system went live Thursday, promising to outperform rivals and guarantee regional self-reliance.
Space Exploration
Dec 15, 2016
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After 17 years and numerous setbacks and budget boosts, Europe's Galileo satnav system is due to go live on Thursday with promises of better-than-ever location services.
Space Exploration
Dec 15, 2016
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Seventeen years and more than 10 billion euros ($11 billion) later, Europe's Galileo satnav system is set to go live on Thursday, promising to outperform US and Russian rivals while boosting regional self-reliance.
Space Exploration
Dec 13, 2016
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Saturn's beautiful rings form a striking feature, cutting across this image of two of the planet's most intriguing moons.
Space Exploration
Apr 11, 2016
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In 1610, Galileo Galilei looked up at the night sky through a telescope of his own design. Spotting Jupiter, he noted the presence of several "luminous objects" surrounding it, which he initially took for stars. In time, ...
Space Exploration
Oct 16, 2015
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(Phys.org)—A pair of space scientists, one with the Lunar and Planetary Institute in Houston Texas the other with Washington University in St. Lois, has found evidence of a large bulge on Ganymede—the largest satellite ...
These new NASA/ESA Hubble Space Telescope images capture a rare occurrence as three of Jupiter's largest moons parading across the giant gas planet's banded face. Hubble took a string of images of the event which show the ...
Space Exploration
Feb 5, 2015
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When Saturn is at its closest to Earth, it's three-quarters of a billion miles away—or more than a billion kilometers! That makes these raw images from the ringed planet all the more remarkable.
Space Exploration
Aug 22, 2014
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