Hubble Spots Double Quasars in Merging Galaxies

This artist’s conception shows the brilliant light of two quasars residing in the cores of two galaxies that are in the chaotic process of merging. The gravitational tug-of-war between the two galaxies stretches them, forming long tidal tails and igniting a firestorm of starbirth. Quasars are brilliant beacons of intense light from the centers of distant galaxies. They are powered by supermassive black holes voraciously feeding on infalling matter. This feeding frenzy unleashes a torrent of radiation that can outshine the collective light of billions of stars in the host galaxy. In a few tens of millions of years, the black holes and their galaxies will merge, and so will the quasar pair, forming an even more massive black hole...
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Unravelling the Secret of a Critical Immune Cell for Cancer Immunity

Tissue captured under a microscope
DC-SCRIPT positive cells (red) activating an
immune response (blue T cells)
Credit: Wang Cao and Shengbo Zhang

WEHI researchers have discovered a key differentiation process that provides an essential immune function in helping to control cancer and infectious diseases.

The research, published in Science Immunology, is the first to show a new factor — DC-SCRIPT — is required for the function a particular type of dendritic cell — called cDC1 — that is essential in controlling the immune response to infection.

Led by WEHI Professor Stephen Nutt, Dr Michael Chopin and Mr Shengbo Zhang, it defines the role for a new regulatory protein in producing dendritic cells...

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New Batteries give Jolt to Renewables, Energy Storage

This magnified image shows aluminum deposited on carbon fibers in a battery electrode. The chemical bond makes the electrode thicker and its kinetics faster, resulting in a rechargeable battery that is safer, less expensive and more sustainable than lithium-ion batteries.

Researchers have been exploring the use of low-cost materials to create rechargeable batteries that will make energy storage more affordable. Now, they have shown that a new technique incorporating aluminum results in rechargeable batteries that offer up to 10,000 error-free cycles.

The cost of harvesting solar energy has dropped so much in recent years that it’s giving traditional energy sources a run for their money...

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New study ties Solar Variability to the onset of decadal La Nina events

solar cycles
Credit: Pixabay/CC0 Public Domain

A new study shows a correlation between the end of solar cycles and a switch from El Nino to La Nina conditions in the Pacific Ocean, suggesting that solar variability can drive seasonal weather variability on Earth.

If the connection outlined in the journal Earth and Space Science holds up, it could significantly improve the predictability of the largest El Nino and La Nina events, which have a number of seasonal climate effects over land. For example, the southern United States tends to be warmer and drier during a La Nina, while the northern U.S. tends to be colder and wetter.

“Energy from the Sun is the major driver of our entire Earth system and makes life on Earth possible,” said Scott McIntosh, a scientist at the National Center for Atmosp...

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