The Sky Tonight

August 01, 2015

Philae results shed light on the nature of comets
Washington DC (SPX) Aug 01, 2015
During the first ever landing of a probe on a comet, the world held its breath as Philae survived a bouncy landing on comet 67P/Churyumov-Gerasimenko on November 12, 2014. This special issue of Science highlights seven new studies that delve further into the data that has been transmitted back by Philae. In a detailed account, Jens Biele et al. describe the critical moments where Philae descends on 67P, only to bounce off the soft, intended landing area and finally settle on a harder surface farth ... read more

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Science on the surface of a comet Complex molecules that could be key building blocks of life, the daily rise and fall of temperature, and an assessment of the surface properties and internal structure of the comet are just some of ... more		Microlensing used to find distant Uranus-sized planet NASA's Hubble Space Telescope and the W.M. Keck Observatory in Hawaii have made independent confirmations of an exoplanet orbiting far from its central star. The planet was discovered through a tech ... more		'Failed stars' host powerful auroral displays Brown dwarfs are relatively cool, dim objects that are difficult to detect and hard to classify. They are too massive to be planets, yet possess some planetlike characteristics; they are too small t ... more
				NASA's Spitzer Confirms Closest Rocky Exoplanet Using NASA's Spitzer Space Telescope, astronomers have confirmed the discovery of the nearest rocky planet outside our solar system, larger than Earth and a potential gold mine of science data. Dubb ... more		Stormy seas in Sagittarius Some of the most breathtaking views in the Universe are created by nebulae - hot, glowing clouds of gas. This new NASA/ESA Hubble Space Telescope image shows the centre of the Lagoon Nebula, an obje ... more

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Vatican sceptical about close encounters of the third kind The recent discovery of an Earth twin has boosted chances there is intelligent life on other planets. But while Pope Francis's telescope scans the starlit skies, the Vatican is sceptical of ever meeting Mr. Spock. ... more		Philae the little lost lander finds organic molecules on comet It really is the little lander that could. ... more		Almost half of Kyiv without heat, power, after Russian attack Denmark proposes NATO surveillance mission for Greenland Military aircraft to arrive in Greenland for 'long-planned' activities: US-Canadian command		Unusual Red Arcs Spotted on Icy Saturn Moon 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 spacecraf ... 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		Astronomers discover powerful aurora beyond solar system Astronomers have discovered the first aurora ever seen in an object beyond our Solar System. The aurora - similar to the famous "Northern Lights" on Earth - is 10,000 times more powerful than any ... more

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New Names and Insights at Ceres Colorful new maps of Ceres, based on data from NASA's Dawn spacecraft, showcase a diverse topography, with height differences between crater bottoms and mountain peaks as great as 9 miles (15 kilome ... more		Missouri researcher bakes asteroids to find water A Missouri University of Science and Technology researcher is cooking up something new in the lab - baking meteorites to learn how to produce water and other easily evaporated compounds from asteroi ... more		Heavy snow in US strands drivers in 100-vehicle crash Chile wildfires rage for third day, entire towns wiped out Death toll from floods rises in Mozambique, South Africa		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
A new litmus test for chaos? Does the flap of a butterfly's wings in Brazil set off a tornado in Texas? This intriguing question - the title of a talk given by MIT meteorologist Edward Lorenz at a 1972 meeting - has come to emb ... 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		New 3-D model could solve supernova mystery Giant stars die a violent death. After a life of several million years, they collapse into themselves and then explode in what is known as a supernova. How these stars explode remains a mystery. How ... more

	Bright Basin on Tethys With the expanded range of colors visible to Cassini's cameras, differences in materials and their textures become apparent that are subtle or unseen in natural color views. Here, the giant impact b ... more		'Bathtub Rings' Suggest Titan's Dynamic Seas Saturn's moon, Titan, is the only object in the Solar System other than Earth known to have liquid on its surface. While most of the lakes are found around the poles, the dry regions near the equato ... more

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