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For the first time in Australian history, a trial run of a wave energy converter has succeeded in generating energy from chaotic and wild ocean waves to a power plant. Key points: Australia can now use the ocean for power generation after trials on King Island proved successful in generating energy This unit can now be commercialized and made up to five times larger and placed off any coast, anywhere in the world. Industry experts are “very happy” with the successful pilot, hope it now opens the door to the industry For years, companies around the world have tried to harness the power of the sea, with varying degrees of success. “This is truly the first project to successfully generate electricity for a customer, and it proves that ocean energy can work,” said Stephanie Thornton of the Australian Ocean Energy Group. Located off Raja Island in Bass Strait, the unit – created by Melbourne company Wave Swell Energy – has been generating electricity for the island’s local energy grid for t

VFTS 243 is a binary system of a large hot blue star and a black hole orbiting each other, as seen in this animation. Credit: ESO/L. Calçada, CC BY There is always something new and exciting going on in the field of black hole research. Albert Einstein first published his book explaining the general theory of relativity—which postulates black holes—in 1922. One hundred years later, astronomers captured the true image of the black hole at the center of the Milky Way. In a recent paper, a team of astronomers describes another exciting new discovery: the first “dormant” black hole observed outside a galaxy. I am an astrophysicist who has studied black holes—the densest objects in the universe—for nearly two decades. An inactive black hole is a black hole that does not emit detectable light. Because of this, they are notoriously hard to find. This new discovery is exciting because it provides insight into the formation and evolution of

Rapid bursts of radio waves from millions to billions of light-years away can be used as probes to study the halos of the hard-to-see hazy gas that surrounds closer galaxies. These pulses, known as fast radio bursts (FRBs), slow down as they transit through the gas shrouding the galaxy between their source and Earth. This has the added consequence of their radio frequency scattering. Using this to investigate the galaxy’s gaseous halo, researchers from the California Institute of Technology (Caltech) found twice as much matter as previously believed in the envelope surrounding the galaxy. This has implications for how this collection of stars and planets evolves over long periods of time. Astronomers looked at a sample of 474 distant FRBs with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) which confirmed that the 24 FRBs intercepted by the galactic halo did indeed slow down compared to the others that traveled to Earth unimpeded. Thus, this effect can be used to investi