Longest Intergalactic Gas Filament discovered

Right click to download: Optical image
Optical image
of the Abell 3391/95 system © Reiprich et al., Astronomy & Astrophysics

Study confirms models on the evolution of our universe. Astrophysicists have for the first time observed a gas filament with a length of 50 million light years. Its structure is strikingly similar to the predictions of computer simulations. The observation therefore also confirms our ideas about the origin and evolution of our universe.

More than half of the matter in our universe has so far remained hidden from us. However, astrophysicists had a hunch where it might be: In so-called filaments, unfathomably large thread-like structures of hot gas that surround and connect galaxies and galaxy clusters...

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Oral Contraceptive Pills protect against Ovarian and Endometrial Cancer

oral contraceptive pills
In the current study, the scientists compared the incidence of breast, ovarian and endometrial cancers between women that had used oral contraceptive pills and never users.
Photograph: Matton

A comprehensive study from Uppsala University, involving more than 250,000 women, shows that oral contraceptive use protects against ovarian and endometrial cancer. The protective effect remains for several decades after discontinuing the use. The study is published in the journal Cancer Research.

Ovarian and endometrial cancer are among the most common gynaecological cancers, with a lifetime risk of just over 2 per cent. Endometrial cancer is slightly more common but as it has clearer symptoms and is therefore often detected at an early stage, the mortality rate is low...

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Upcycling: New Catalytic process turns Plastic bags into Adhesives

Using a catalyst based on ruthenium (gold ball, center), UC Berkeley chemists were able to add specific chemical groups — in this case, OH (red) – to polyethylene polymer chains, creating an oxidized polyethylene (foreground) that adheres strongly to metal but retains the unique plastic properties of the polymer. (UC Berkeley image by Liye Chen)

Converting polyethylene packaging into high-value products incentivizes plastics recycling. Only a small percentage of plastic bags and other polyethylene packaging is recycled because only low-value products can be made from this waste. Chemists have created a catalytic process that preserves the desirable properties of polyethylene while adding another attribute – stickiness – that increases the value of the recycled product...

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Saturn moon, Enceladus, could support life in its Subsurface Ocean

Courtesy of Southwest Research Institute This figure illustrates a cross-section of Enceladus, showing a summary of the processes SwRI scientists modeled in the Saturn moon. Oxidants produced in the surface ice when water molecules are broken apart by radiation can combine with reductants produced by hydrothermal activity and other water-rock reactions, creating an energy source for potential life in the ocean.

Using data from NASA’s Cassini spacecraft, scientists at Southwest Research Institute (SwRI) modeled chemical processes in the subsurface ocean of Saturn’s moon Enceladus. The studies indicate the possibility that a varied metabolic menu could support a potentially diverse microbial community in the liquid water ocean beneath the moon’s icy facade.

Prior to its deorbit in Sep...

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