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Breaking the warp barrier for faster-than-light travel

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IMAGE: Artistic impression of different spacecraft designs considering theoretical shapes of different kinds of warp bubbles .
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Credit: E Lentz
If travel to distant stars within an individual s lifetime is going to be possible, a means of faster-than-light propulsion will have to be found. To date, even recent research about superluminal (faster-than-light) transport based on Einstein s theory of general relativity would require vast amounts of hypothetical particles and states of matter that have exotic physical properties such as negative energy density. This type of matter either cannot currently be found or cannot be manufactured in viable quantities. In contrast, new research carried out at the University of Göttingen gets around this problem by constructing a new class of hyper-fast solitons using sources with only positive energies that can enable travel at any speed. This reignites debate about the possibility of faster-t ....

Erik Lentz , Erikw Lentz , Proxima Centauri , Warp Barrier , Hyper Fast Solitons , Einstein Maxwell Plasma Theory , Quantum Gravity , Chemistry Physics Materials Sciences , Mathematics Statistics , Space Planetary Science , Technology Engineering Computer Science , ஏறிக் லெந்தஜு , போரிடு தடை , ஐன்ஸ்டீன் மேக்ஸ்வெல் பிளாஸ்மா கோட்பாடு , குவாண்டம் ஈர்ப்பு , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் , கணிதம் புள்ளிவிவரங்கள் , இடம் கிரகங்கள் அறிவியல் , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் ,

Microscopic wormholes possible in theory

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Wormholes play a key role in many science fiction films - often as a shortcut between two distant points in space. In physics, however, these tunnels in spacetime have remained purely hypothetical. An international team led by Dr. Jose Luis Blázquez-Salcedo of the University of Oldenburg has now presented a new theoretical model in the science journal
Physical Review Letters that makes microscopic wormholes seem less far-fetched than in previous theories.
Wormholes, like black holes, appear in the equations of Albert Einstein s general theory of relativity, published in 1916. An important postulate of Einstein s theory is that the universe has four dimensions - three spatial dimensions and time as the fourth dimension. Together they form what is known as spacetime, and spacetime can be stretched and curved by massive objects such as stars, much as a rubber sheet would be curved by a metal ball sinking into it. The curvature of spacetime determines the way o ....

Eugen Radu , Albert Einstein , Jutta Kunz , Christian Knoll , University Of Bremen , Complutense University Of Madrid , German Research Foundation , Research Training Group Models Of Gravity , University Of Oldenburg , Centre Of Applied Space Technology , Physical Review Letters , Complutense University , Universidade De Aveiro , Research Training Group , Applied Space Technology , Chemistry Physics Materials Sciences , Geophysics Gravity , ஆல்பர்ட் ஐன்ஸ்டீன் , ஜட குன்ஸ் , கிறிஸ்துவர் நோல்ல் , பல்கலைக்கழகம் ஆஃப் ப்ரெமன் , ஜெர்மன் ஆராய்ச்சி அடித்தளம் , ஆராய்ச்சி பயிற்சி குழு மாதிரிகள் ஆஃப் ஈர்ப்பு , பல்கலைக்கழகம் ஆஃப் ஓல்டந்ப்ர்க் , மையம் ஆஃப் பயன்படுத்தப்பட்டது இடம் தொழில்நுட்பம் , உடல் விமர்சனம் எழுத்துக்கள் ,

Gigantic jet spied from black hole in early universe

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IMAGE: The main panel of this graphic is an artist s illustration of a
close-up view of a quasar and its jet, like the one in PJ352-52. The inset contains X-ray data from
Chandra.
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Credit: X-ray: NASA/CXO/JPL/T. Connor; Optical: Gemini/NOIRLab/NSF/AURA; Infrared: W.M. Keck
Observatory; Illustration: NASA/CXC/M.Weiss
Astronomers have discovered evidence for an extraordinarily long jet of particles coming from a supermassive black hole in the early universe, using NASA s Chandra X-ray Observatory.
If confirmed, it would be the most distant supermassive black hole with a jet detected in X-rays. Coming from a galaxy about 12.7 billion light-years from Earth, the jet may help explain how the biggest black holes formed at a very early time in the universe s history. ....

United States , United Kingdom , Milky Way , Magallanesy Antaica Chilena , Baden Wuberg , New Mexico , Eduardo Ba , Thomas Connor , Hannahp Earnshaw Caltech , Roberto Decarli , Chris Carilli , Emmanuel Momjian , Daniel Stern , Smithsonian Astrophysical Observatory Chandrax Ray Center , Max Planck Institute For Astronomy , Propulsion Laboratory , Marshall Space Flight Center , Andrew Fabian University Of Cambridge , Very Long Baseline , Max Planck Institute , Andrew Fabian , Emanuele Paolo Farina , Chiara Mazzucchelli , Space Flight Center , Smithsonian Astrophysical Observatory , Chandrax Ray Center ,

Most distant quasar with powerful radio jets discovered

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IMAGE: This artist s impression shows how the distant quasar P172+18 and its radio jets may have looked. To date (early 2021), this is the most distant quasar with radio jets ever.
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Credit: ESO/M. Kornmesser
With the help of the European Southern Observatory s Very Large Telescope (ESO s VLT), astronomers have discovered and studied in detail the most distant source of radio emission known to date. The source is a radio-loud quasar a bright object with powerful jets emitting at radio wavelengths that is so far away its light has taken 13 billion years to reach us. The discovery could provide important clues to help astronomers understand the early Universe. ....

United States , United Kingdom , Czech Republic , California Institute Of Technology , Broida Hall , Cerro Armazones , Baden Wuberg , La Silla , Jan Torge Schindler , Roberto Decarli , Irham Taufik Andika , Frederick Davies , Chiara Mazzucchelli , Astrofisicae Scienza , Eduardo Ba , Santa Barbara , Chris Carilli , Bramp Venemans , Emanuele Paolo Farina Max Planck Institut , Antonio Pensabene Dipartimento , University Of California , Kavli Institute For Astrophysics , Aaronj Barth Department Of Physics , Cavendish Laboratory , Josephf Hennawi Department Of Physics , Emmanuel Momjian National Radio Astronomy Observatory ,

A giant, sizzling planet may be orbiting the star Vega

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Astronomers have discovered new hints of a giant, scorching-hot planet orbiting Vega, one of the brightest stars in the night sky.
The research, published this month in
The Astronomical Journal, was led by University of Colorado Boulder student Spencer Hurt, an undergraduate in the Department of Astrophysical and Planetary Sciences.
It focuses on an iconic and relatively young star, Vega, which is part of the constellation Lyra and has a mass twice that of our own sun. This celestial body sits just 25 light-years, or about 150 trillion miles, from Earth pretty close, astronomically speaking.
Scientists can also see Vega with telescopes even when it s light out, which makes it a prime candidate for research, said study coauthor Samuel Quinn. ....

United States , George Zhou , Samuel Quinn , Gilbert Esquerdo , Ruth Angus , Andrew Vandeburg , David Latham , Michael Calkins , Fred Lawrence Whipple , Christian Latham , Perry Berlind , American Museum Of Natural History , University Of Wisconsin , Department Of Astrophysical , University Of Colorado Boulder , Planetary Sciences , Smithsonian Center , Astrophysical Journal , Colorado Boulder , Spencer Hurt , Fred Lawrence Whipple Observatory , American Museum , Space Planetary Science , Planets Moons , Stars The Sun , ஒன்றுபட்டது மாநிலங்களில் ,