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santecarloni

[1105.1861] Interstellar Solid Hydrogen - 2 views

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    We consider the possibility that solid molecular hydrogen is present in interstellar space....
jaihobah

Yuri Milner and Mark Zuckerberg Plan Interstellar Mission to Alpha Centauri - The Atlantic - 1 views

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    Behind the scenes story of this whole Starshot thing
santecarloni

Voyager 1 Hits Rumble Strips At the Edge of the Solar System | MIT Technology Review - 2 views

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    NASA's oldest interstellar spacecraft is suddenly measuring changes more dramatic than any it has seen during its 35 year journey
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    this is very nice! in either of the explanations Voyager will likely be in good enough shape to send data when outside of the boundary layer ...
Thijs Versloot

Rogue planets in interstellar space - 0 views

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    The paper: Mass and motion of globulettes in the Rosette Nebula http://www.aanda.org/articles/aa/abs/2013/07/aa21547-13/aa21547-13.html
Ma Ru

Yet another issue to take into account when you want to travel at c - 1 views

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    While my attitude to articles about interstellar travel is generally sceptical, this one seems to raise quite an interesting point... Physicists?
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    mmm, I think that if we manage to travel at 99.999998 per cent the speed of light, we'll have the technology to deviate these atoms ! one way could be a super strong magnetic field, or a super laser that would act as an ice breaker with the radiation pressure (the good thing is that light always travel at the speed of light, even if you are at 99.999998 per cent the speed of light)
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    Also, remember never to dereference null pointers.
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    True, it's almost like installing accelerometers upside down...
johannessimon81

How Building a Black Hole for Interstellar Led to an Amazing Scientific Discovery | WIRED - 2 views

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    Kip Thorne looks into the black hole he helped create and thinks, "Why, of course. That's what it would do." This particular black hole is a simulation of unprecedented accuracy. It appears to spin at nearly the speed of light, dragging bits of the universe along with it.
zoervleis

A Roadmap to Interstellar Flight - 1 views

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    So we need lasers. Big lasers. :)
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    anybody want's to have a closer look at this?
Marcus Maertens

Exoplanet Travel Bureau | Explore - Exoplanet Exploration: Planets Beyond our Solar System - 1 views

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    NASA marketing interstellar travel to foreign bodies even without knowing how they actually look like.
jaihobah

Antimatter Starship Scheme Coming to Kickstarter - 1 views

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    "Hbar Technologies plans a Kickstarter effort to raise US $200,000 for the next phase design of an antimatter-propelled spaceship. The two scientists behind this design effort are a veteran Fermilab particle accelerator scientist and a former Los Alamos National Laboratory physicist and founding director of the U.S. Center for Space Nuclear Research. They originally developed it for NASA at the turn of the millennium."
LeopoldS

Warp Drive More Possible Than Thought, Scientists Say | Space.com - 1 views

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    Sante, Andreas, Luzi, Pacome ... we need you: "But recently White calculated what would happen if the shape of the ring encircling the spacecraft was adjusted into more of a rounded donut, as opposed to a flat ring. He found in that case, the warp drive could be powered by a mass about the size of a spacecraft like the Voyager 1 probe NASA launched in 1977.

    Furthermore, if the intensity of the space warps can be oscillated over time, the energy required is reduced even more, White found.

    "The findings I presented today change it from impractical to plausible and worth further investigation," White told SPACE.com. "The additional energy reduction realized by oscillating the bubble intensity is an interesting conjecture that we will enjoy looking at in the lab.""
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    To me, this looks a little bit like the claim "infinity minus one is a little bit less than infinity"...
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    Luzi I miss you ...
johannessimon81

Voyager I has officially entered interstellar space - 2 views

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    NASA JPL presentation on how and when Voyager exited the Heliosphere about a year ago - fascinating!
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    NASA doing a great job here - very good presentation at a perfect abstraction level. I recommend watching the whole record.
Athanasia Nikolaou

Science on Mars and Mars on Science - 0 views

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    Some sort of organic carbon has been detected by the sampling of Curiosity; the contamination source was isolated and the signal persists. The scientists suggest as a source meteorites transporting interstellar matter, or maybe some sort of ancient life whose biomass production only survived cosmic radiation as it was buried underground. a big deal: six relevant articles were published simultaneously online: http://www.sciencemag.org/site/extra/curiosity/index.xhtml?utm_content=&utm_medium=Facebook&utm_campaign=Science&utm_source=shortener
Ma Ru

Dark Matter or Black Hole Propulsion? - 1 views

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    Anyone out there still doing propulsion stuff? Two more papers just waiting to get busted... http://arxiv.org/abs/0908.1429v1 http://arxiv.org/abs/0908.1803
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    What an awful bunch of complete nonsense!!! But I don't think anybody wants to hear MY opinion on this...
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    wow, is this serious at all...!?
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    Are you joking?? The BH drive propses a BH with a lifetime of about an year, just 10^7 tons, peanuts!! Then you have to produce it, better not on Earth, so you do this in space, with a laser that produces an equivalent of 10^9 tons highly foucussed, even more peanuts!! Reasonable losses in the production process (probably 99,999%) are not yet taken into account. Engineering problems... :-) The DM drive is even better, they want to collect DM and compress it in a propulsion chamber. Very easy to collect and compress a gas of particles that traverse the Earth without any interaction. Perhaps if the walls of the chamber are made of artificial BHs?? Who knows??
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    WRONG!!! we are all just WAITING for your opinion on this ....!!!
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    well, yes my remark was ironic... I'm surprised they did a magazine on these concepts...! But the press is always waiting for sensational. They do not even wait for the work to be peer-reviewed now to make an article on it ! This is one of the bad sides of arxiv in my opinion. It's like a journalist that make an article with a copy-paste in wikipedia ! Anyway, this is of course complete bullsh..., and I would have laughed if I had read this in a sci-fi book... but in a "serious" article i'm crying... For the DM i do not agree with your remark Luzi. It's not dark energy they want to use. The DM is baryonic, it's dark just because it's cold so we don't see it by usual means. If you believe the in the standard model of cosmology, then the DM should be somewhere around the galaxies. But it's of course not uniformly distributed, so a DM engine would work (if at all...) only in the periphery of galaxies. It's already impossible to get there...
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    One reply to Pacome, though the discussion exceeds by far the relevance of the topic already. Baryonic DM is strictly limited by cosomology, if one believes in these models, of course. Anyway, even though most DM is cold, we are constantly bombarded by some DM particles that come together with cosmic radiation, solar wind etc. etc. If DM easily interacted with normal matter, we would have found it long ago. In the paper they consider DM as neutralinos, which are neither baryonic nor strongly or electromagnetically interacting.
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    well then I agree, how the fu.. they want to collect them !!!
annaheffernan

Black-hole mergers cast kaleidoscope of shadows - 6 views

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    In Interstellar, the science-fiction film out this week, Matthew McConaughey stars as an astronaut contending with a supermassive black hole called Gargantua. The film's special effects have been hailed as the most realistic depiction ever made of this type of cosmic object. But astrophysicists have now gone one better - this is a really cool visualisation done by researchers in Cornell.
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    Wow, impressive! Simulating eXtreme Spacetimes (SXS) software, very quick merging process though 17ms.. Observable?
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    Mind-blowing!
icheibas

How Big Would a Generation Ship Need to be to Keep a Crew of 500 Alive for the Journey ... - 4 views

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    Interstellar space travel
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