The Sky Tonight

July 31, 2015

Unusual Red Arcs Spotted on Icy Saturn Moon
Pasadena CA (JPL) Jul 30, 2015
Like graffiti sprayed by an unknown artist, unexplained arc-shaped, reddish streaks are visible on the surface of Saturn's icy moon Tethys in new, enhanced-color images from NASA's Cassini spacecraft. The red arcs are narrow, curved lines on the moon's surface, and are among the most unusual color features on Saturn's moons to be revealed by Cassini's cameras. Images taken using clear, green, infrared and ultraviolet spectral filters were combined to create the enhanced-color views, which highligh ... read more

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First detection of lithium from an exploding star The chemical element lithium has been found for the first time in material ejected by a nova. Observations of Nova Centauri 2013 made using telescopes at ESO's La Silla Observatory, and near Santiag ... more		Dense star clusters shown to be binary black hole factories The coalescence of two black holes - a very violent and exotic event - is one of the most sought-after observations of modern astronomy. But, as these mergers emit no light of any kind, finding su ... more		York scientists unlock secrets of stars through aluminium Physicists at the University of York have revealed a new understanding of nucleosynthesis in stars, providing insight into the role massive stars play in the evolution of the Milky Way and the origi ... more
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Is science drawing closer to an alien world? NASA's discovery of Earth-like exoplanet Kepler-452b, nicknamed "Earth 2.0", has social media buzzing about the chances of finding a faraway world, possibly with alien life or key resources such as water. ... more		Airbus DS to build JUICE, ESA's next life-tracker inside the Solar System The European Space Agency (ESA) has selected Airbus Defence and Space as the prime contractor to develop and build the JUICE (JUpiter ICy moons Explorer) spacecraft. JUICE is the first large mission ... more		Identifying ever-growing disturbances leading to freak waves Physicists like to study unusual kinds of waves, like freak waves found in the sea. Such wave movements can be studied using models designed to describe the dynamics of disturbances. Theoretical phy ... more		China's Alibaba to invest $1.0 bn in cloud computing Chinese e-commerce giant Alibaba will invest $1.0 billion in its cloud computing arm to expand its international presence, the company said Wednesday, as it looks outside its core business and beyond traditional markets. ... more

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