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AmericaSpace Launch Countdown

Next Launch MUOS-3 on a Atlas V 551 rocket from Cape Canaveral AFB, FL
scheduled for:
21 Jan 15 1:04:00 GMT
20 Jan 15 20:04:00 EST

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Water on Vesta? Gullies Suggest Wet Debris Flows in the Past, Study Finds

Image of curved gullies and fan-shaped deposits in Cornelia crater on Vesta. Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

The Dawn spacecraft is now very close to the dwarf planet Ceres, but there are some interesting new findings from its previous visit to the asteroid Vesta. Curved gullies on its surface suggest that small amounts of water may […]

Two New Exoplanet Findings Bring Us Closer to Discovering Other Earth-Like Worlds

Artist’s conception of a super-Earth ocean world, with another gas giant planet rising over the horizon. Image Credit: David A. Aguilar/CfA

When it comes to exoplanets, the most exciting for many people are, of course, the ones which may be the most Earth-like, since these are regarded as the most likely to possibly support some form […]

Scorching Hot Venus May Have Once Had Oceans ... of Carbon Dioxide

Radar image of the northern hemisphere of Venus, taken by the Magellan spacecraft. Radar is necessary to see through Venus’ perpetual cloud cover. Image Credit: NASA/JPL

The continued exploration of the planets and moons in our Solar System have revealed many strange things, including that Earth is not the only place with oceans and […]

New Study Suggests Europa Is Far Less Geophysically Active Than Previously Thought

An artist’s impression of Jupiter and its moon Europa, based on actual visible light images. Last year, a team of astronomers using the Hubble Space Telescope, had reported the detection of signs of water vapour being vented off Europa’s south pole. A new study comes to challenge this interpretation, by presenting evidence that Europa’s […]

Coloring the Ice: Scientist Compiles First-Ever Global Color Maps of Saturn's Icy Moons From Cassini Data

A high-resolution color global map of Saturn’s moon Mimas, based on imaging data from NASA’s Cassini spacecraft. A set of new global maps of Saturn’s largest icy moons reveal the latters’ landscapes in unprecedented detail. Image Credit: NASA/JPL-Caltech/SSI/LPI

The first 50 years of planetary exploration have seen the successful completion of humanity’s epic, first […]

Dawn Spacecraft Takes Its Best-Yet Image of Dwarf Planet Ceres

The best image of dwarf planet Ceres obtained so far by the Dawn spacecraft, from 740,000 miles (1.2 million kilometers) away. Images will get much better as the spacecraft approaches Ceres over the next few months. Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

The Dawn spacecraft continues to make its way closer to a world which still hasn’t […]

Saturn's Moon Mimas May Have an Underground Ocean—or Just a Weird Core

Mimas, a cold, icy, and tiny moon of Saturn, may have a liquid water ocean below its heavily cratered surface. Photo Credit: NASA/JPL/SSI

It wasn’t that long ago that Earth was thought to be the only place in the Solar System capable of having liquid water oceans, but now we know of several moons that […]

New Study Points to Alternative Origin for the 'Man in the Moon'

Oceanus Procellarum, or Ocean of Storms, an expansive flat basaltic basin that covers approximately 17 percent of the Moon’s near side, is surrounded by a series of linear gravitational anomalies (shown in red), as revealed by NASA’s GRAIL spacecraft. These anomalies indicate that the large basin was formed by volcanic processes rather than an […]

It's Back! 'Mystery Island' in Titan Sea Makes Unexpected Reappearance

Three radar images, taken from April 2007 to August 2014, showing how the “mystery island” in Ligeia Mare has changed in appearance over time. Image Credit: NASA/JPL-Caltech/ASI/Cornell

The mystery of an unusual feature in one of Titan’s hydrocarbon seas, dubbed the “mystery island,” has taken an interesting turn. After apparently disappearing following its initial […]

Living On the Edge: The Icy Plains of Enceladus (Part 3)

Lit by reflected light from Saturn, Enceladus appears to hover above the gleaming rings with its well-defined ice particle jets spraying a continuous hail of tiny ice grains, in this image taken by NASA’s Cassini spacecraft in 2006 from a distance of 1.303 million kilometers. The 500-km-wide moon has excited the scientific community and […]