Powerful black hole jet imaged with unprecedented accuracy | Space

“This allows us for the first time to see and study an extragalactic radio jet on scales smaller than the distance light travels in one day,” astronomer Michael Janssen of the Max Planck Institute for Radio Astronomy in Germany and Radboud University in the Netherlands, said in a statement. “We see up close and personal how a monstrously gigantic jet launched by a supermassive black hole is being born.” 
— Read on www.space.com/amp/event-horizon-telescope-images-black-hole-jet

A new era of spaceflight? Promising advances in rocket propulsion

Solar sails

While propulsion usually requires propellant of some description, a more “green” method relying only on light from the Sun itself.

Sails rely on the physical property of conservation of momentum. On Earth, we are used to seeing this momentum as a dynamic pressure from air particles blowing into a sheet when sailing, propelling a vessel forwards. Light is comprised of photons, which have no mass, but they do have momentum and can transfer it to a sail. As the energies of individual photons are very small, an extremely large sail size is needed for any appreciable acceleration.

— Read on phys.org/news/2021-05-era-spaceflight-advances-rocket-propulsion.amp

Are antimatter stars firing bullets of antihelium at Earth? – Physics World

The mystery of matter and antimatter
The focus has therefore turned back to what at first may seem an improbable explanation – stars made purely from antimatter. According to theory, matter and antimatter should have been created in equal amounts in the Big Bang, and subsequently all annihilated leaving a universe full of radiation and no matter. Yet since we live in a matter-dominated universe, more matter than antimatter must have been created in the Big Bang – a mystery that physicists have grappled with for decades.
— Read on physicsworld.com/a/are-antimatter-stars-firing-bullets-of-antihelium-at-earth/

Supermoon: how an illusion makes the full Moon appear bigger than it really is

More technically, it’s also known as a perigee syzygy. The opposite phenomenon – when the full Moon is furthest away from Earth in its orbit – is called an apogee syzygy or micromoon. Obviously the supermoon is not a new phenomenon, but its name is quite new – the word doesn’t appear before the 1970s.
— Read on theconversation.com/amp/supermoon-how-an-illusion-makes-the-full-moon-appear-bigger-than-it-really-is-159721

Danny Boyle’s Sunshine is a blindingly human space odyssey

The film is set almost entirely aboard Icarus, a spacecraft bound for the sun. The crew has been tasked with restarting the dying celestial body by launching a giant bomb into it—“creating a star within a star.” Their mission unfolds as a daisy chain of breathless cliffhangers. Just about all of them are the products of human error; the decision to drift off course and rendezvous with the first ship sent to accomplish their task creates a domino effect of miscalculations, moral dilemmas, daunting obstacles, and impossible decisions.
— Read on www.yahoo.com/lifestyle/danny-boyle-sunshine-blindingly-human-190000557.html

See World’s First Video of a Space-Time Crystal – SciTechDaily

A crystal is a solid whose atoms or molecules are regularly arranged in a particular structure. If one looks at the arrangement with a microscope, one discovers an atom or a molecule always at the same intervals. It is similar with space-time crystals: however, the recurring structure exists not only in space, but also in time. The smallest components are constantly in motion until, after a certain period, they arrange again into the original pattern.

— Read on scitechdaily.com/see-worlds-first-video-of-a-space-time-crystal/amp/

The moon has a tail, and Earth wears it like a scarf once a month | Live Science

According to a study published March 3 in the journal JGR Planets, the lunar tail is made of millions of sodium atoms blasted out of the lunar soil and into space by meteor strikes and then pushed hundreds of thousands of miles downstream by solar radiation. For a few days a month, when the new moon sits between Earth and the sun, our planet’s gravity drags that sodium tail into a long beam that wraps around Earth’s atmosphere before blasting into space on the opposite side.
— Read on www.livescience.com/amp/moon-has-a-sodium-tail.html

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