Jets of bacteria carry microscopic cargo

It is a longstanding challenge to be able to control biological systems to perform specific tasks. In a paper published in Nature Physics, researchers at the Niels Bohr Institute, University of Copenhagen, in collaboration ...

Astrophysicists wear 3-D glasses to watch quasars

A team of researchers from Russia and Greece reports a way to determine the origins and nature of quasar light by its polarization. The new approach is analogous to the way cinema glasses produce a 3-D image by feeding each ...

ALMA spots metamorphosing aged star

An international team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) captured the very moment when an old star first starts to alter its environment. The star has ejected high-speed bipolar gas ...

Acetone plus light creates a green jet fuel additive

Take biomass-derived acetone—common nail polish remover—use light to upgrade it to higher-mass hydrocarbons, and, voila, you have a domestically generated product that can be blended with conventional jet fuel to fly ...

Famous black hole has jet pushing cosmic speed limit

The Event Horizon Telescope Collaboration released the first image of a black hole with observations of the massive, dark object at the center of Messier 87, or M87, last April. This black hole has a mass of about 6.5 billion ...

Blazar variability

Active galactic nuclei (AGN) are supermassive black holes at the centers of galaxies that are accreting material. These AGN emit jets of charged particles that move at speeds close to that of light, transporting huge amounts ...

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