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Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket

Like a bullet wrapped in a full metal jacket, a high-velocity hydrogen cloud hurtling toward the Milky Way appears to be encased in a shell of dark matter. Astronomers believe that without this protective shell, the high-velocity cloud known as the Smith Cloud would have disintegrated long ago when it first collided with the disk of our Galaxy.

Posted: May 23rd, 2014

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First broadband wireless connection - to the moon?!

Researchers will present new details and the first comprehensive overview of the on-orbit performance of their record-shattering laser-based communication uplink between the moon and Earth, which beat the previous record transmission speed last fall by a factor of 4,800. Earlier reports have stated what the team accomplished, but have not provided the details of the implementation.

Posted: May 22nd, 2014

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Very distant galaxy cluster confirmed

The structures and star populations of massive galaxies appear to change as they age, but much about how these galaxies formed and evolved remains mysterious. Many of the oldest and most massive galaxies reside in clusters, enormous structures where numerous galaxies are found concentrated together. Galaxy clusters in the early universe are thought to be key to understanding the lifecycles of old galaxies, but to date astronomers have located only a handful of these rare, distant structures.

Posted: May 22nd, 2014

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SWARM is drawing the Earth's magnetic field in 3D

Thanks to a constellation of three satellites, ESA's SWARM mission will track and measure the planet's magnetic forces from its core to its upper atmosphere. Five months after the launch, the satellites are beginning to gather data.

Posted: May 21st, 2014

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Analyzing Sun-like stars that eat Earth-like planets (w/video)

Astronomers have developed a model that estimates the effect that ingesting large amounts of the rocky material from which 'terrestrial' planets like Earth, Mars and Venus are made has on a star's chemical composition and has used the model to analyze a pair of twin stars which both have their own planets.

Posted: May 20th, 2014

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Plastic, 'wrong-way' dunes arise on Saturn moon Titan

The dunes of Titan tell cosmic tales. A Cornell senior and researchers have narrowed theories on why the hydrocarbon dunes - think plastic - on Saturn's largest moon are oriented in an unexpected direction, a solar system eccentricity that has puzzled space scientists.

Posted: May 15th, 2014

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