Hubble finds that Ghost Light among Galaxies Stretches Far Back in Time

These are Hubble Space Telescope images of two massive clusters of galaxies named MOO J1014+0038 (left panel) and SPT-CL J2106-5844 (right panel). The artificially added blue color is translated from Hubble data that captured a phenomenon called intracluster light. This extremely faint glow traces a smooth distribution of light from wandering stars scattered across the cluster. Billions of years ago the stars were shed from their parent galaxies and now drift through intergalactic space.
Credits: NASA, ESA, STScI, James Jee (Yonsei University); Image Processing: Joseph DePasquale (STScI)

In giant clusters of hundreds or thousands of galaxies, innumerable stars wander among the galaxies like lost souls, emitting a ghostly haze of light...

Read More

Actinidia arguta (sarunashi) Juice Inhibits Lung Cancer in Mice, study finds

sarunashi

Using a mouse model, Japanese researchers unleash the likely mechanism of action of Sarunashi juice on lung cancer development. Among all the cancers, lung cancer has one of the lowest five-year survival rates. Smoking tobacco and using tobacco-based products is known to heavily contribute to the development of lung cancer. It is a clinically established fact that the active ingredients in various fruits minimize the risk of chronic diseases including cancer. “Sarunashi” (Actinidia arguta) is an edible fruit cultivated in Japan’s Okayama Prefecture. Using a mouse model, researchers from Okayama University led by Dr...

Read More

A Step Towards Solar Fuels out of Thin Air

© 2023 EPFL / Alain Herzog  : Kevin Sivula and his team invented a solar-powered artificial leaf for harvesting hydrogen fuel from humid air.
EPFL chemical engineers have invented a solar-powered artificial leaf, built on a novel electrode which is transparent and porous, capable of harvesting water from the air for conversion into hydrogen fuel. The semiconductor-based technology is scalable and easy to prepare.

A device that can harvest water from the air and provide hydrogen fuel — entirely powered by solar energy — has been a dream for researchers for decades. Now, EPFL chemical engineer Kevin Sivula and his team have made a significant step towards bringing this vision closer to reality...

Read More

Are Black Holes Time Machines? Yes, but there’s a Catch

Are black holes time machines? Yes, but there's a catch
Credit: NASA / Goddard Space Flight Center / Jeremy Schnittman

Black holes form natural time machines that allow travel to both the past and the future. But don’t expect to be heading back to visit the dinosaurs any time soon.

At present, we don’t have spacecraft that could get us anywhere near a black hole. But, even leaving that small detail aside, attempting to travel into the past using a black hole might be the last thing you ever do.

What are black holes?

A black hole is an extremely massive object that is typically formed when a dying star collapses in on itself.

Like planets and stars, black holes have gravitational fields around them. A gravitational field is what keeps us stuck to Earth, and what keeps Earth revolving around the Sun.

As a rule of thumb, the mor...

Read More