Keeping liquids off the wall

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On Earth, liquid flows downhill thanks to gravity. Creating an effective liquid fuel tank involves little more than putting a hole at the bottom of a container. That won't work in space, though. In microgravity, with no gravity to force liquids to the bottom of a container, they cling to its surfaces instead. The Slosh Coating investigation tests using a liquid-repellant coating inside a container to control the movement of liquids in microgravity.
via Science Daily
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Studying magnetic space explosions with NASA missions

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Magnetic explosions happen constantly all across the universe, and new results with NASA's ARTEMIS mission help explain how near-Earth explosions convert energy into heat and propel particles toward Earth.
via Science Daily
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Hubble dates black hole's last big meal

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NASA's Hubble Space Telescope has found that the black hole at the center of our Milky Way galaxy ate its last big meal about 6 million years ago, when it consumed a large clump of infalling gas. After the meal, the engorged black hole burped out a colossal bubble of gas weighing the equivalent of millions of suns, which now billows above and below our galaxy's center.
via Science Daily
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Hubble Dates Black Hole’s Last Big Meal

Energetic Event 'Burped' Billowing Plasma Bubbles 6 Million Years Ago
About 6 million years ago, when our very remote ancestors began to evolve away from chimpanzees, our Milky Way galaxy's hefty black hole was enjoying a sumptuous feast. It gulped down a huge clump of interstellar hydrogen.

Now, eons later, we see the result of the black hole feast. The black hole "burped" hot plasma that is now towering far above and below the plane of our galaxy. These invisible bubbles, weighing the equivalent of millions of suns, are called the Fermi Bubbles. Their energetic gamma-ray glow was first discovered in 2010 by NASA's Fermi Gamma-ray Space Telescope. (Enrico Fermi was an Italian physicist who created the world's first nuclear reactor.)

Astronomers have wondered how long ago the gaseous lobes were created, and if the process was slow or rapid. Hubble observations of the northern bubble have solved the question by determining a more precise age for the bubbles. Hubble was used to measure the speed of the gasses in the billowing bubbles, and astronomers could then calculate back to the time when they were born in a fast, energetic event.

via Hubble - News feed
http://hubblesite.org/news_release/news/2017-10

Centaurus A

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Only 11 million light-years away, Centaurus A is the closest active galaxy to planet Earth. Spanning over 60,000 light-years, the peculiar elliptical galaxy also known as NGC 5128, is featured in this sharp telescopic view. Centaurus A is apparently the result of a collision of two otherwise normal galaxies resulting in a fantastic jumble of star clusters and imposing dark dust lanes. Near the galaxy's center, left over cosmic debris is steadily being consumed by a central black hole with a billion times the mass of the Sun. As in other active galaxies, that process likely generates the radio, X-ray, and gamma-ray energy radiated by Centaurus A. The remarkably deep, visible light image offers further evidence of the ensuing cosmic violence in the faint shells and extended features surrounding the active galaxy.

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