warrenellis + space   142

Scientists build first map of hidden universe
"A team led by astronomers from the Max Planck Institute for Astronomy has created the first three-dimensional map of the 'adolescent' Universe, just 3 billion years after the Big Bang. This map, built from data collected from the W. M. Keck Observatory, is millions of light-years across and provides a tantalizing glimpse of large structures in the 'cosmic web' – the backbone of cosmic structure."
space 
9 days ago by warrenellis
Hubble maps temperature, water vapor on wild exoplanet
"the planet, called WASP-43b, is no place to call home. It's a world of extremes, where winds howl at the speed of sound from a 3,000-degree-Fahrenheit dayside to a pitch-black nightside when temperatures plunge to a relatively cool 1,000 degrees Fahrenheit, still hot enough to melt silver."
space 
16 days ago by warrenellis
Researcher studies possibility of metal snow on Venus
"My dissertation is focusing on metal condensates in planetary atmospheres," said Kohler, who is the only student in the Space and Planetary Sciences Center currently researching Venus. "I have been primarily looking at the stability of materials on Venus and determining what can exist at certain altitudes. I'm finding that there are different forms of iron compounds or mercury compounds that can exist at these conditions."

METAL SNOW
space 
22 days ago by warrenellis
Hugh Everett: The man who gave us the multiverse - physics-math - 25 September 2014 - New Scientist
"Hugh Everett's many-worlds interpretation of quantum mechanics arose from what must have been the most world-changing drinking session of all time. One evening in 1954, in a student hall at Princeton University, grad student Everett was drinking sherry with his friends when he came up with the idea that quantum effects cause the universe to constantly split."
sci  space 
24 days ago by warrenellis
Cassini watches mysterious feature evolve in Titan sea
"NASA's Cassini spacecraft is monitoring the evolution of a mysterious feature in a large hydrocarbon sea on Saturn's moon Titan. The feature covers an area of about 100 square miles (260 square kilometers) in Ligeia Mare, one of the largest seas on Titan. It has now been observed twice by Cassini's radar experiment, but its appearance changed between the two apparitions."
space 
26 days ago by warrenellis
Researcher shows that black holes do not exist
"But now Mersini-Houghton describes an entirely new scenario. She and Hawking both agree that as a star collapses under its own gravity, it produces Hawking radiation. However, in her new work, Mersini-Houghton shows that by giving off this radiation, the star also sheds mass. So much so that as it shrinks it no longer has the density to become a black hole."

Mersini-Houghton is a wild mind, and note this isn't peer-reviewed -- but if you're reading this, understand that I file mad ideas as research material, not post them as news
space 
4 weeks ago by warrenellis
MIT School of Science
MIT NEWS OFFICE, Particle detector finds hints of dark matter in space, Sep 18, 2014
space 
5 weeks ago by warrenellis
Jellyfish flames on the ISS
"Unlike flames on Earth, which have a tear-drop shape caused by buoyant air rising in a gravitational field, flames in space curl themselves into tiny balls. Untethered by gravity, they flit around as if they have minds of their own. More than one astronaut conducting experiments for researchers on Earth below has been struck by the way flameballs roam their test chambers in a lifelike search for oxygen and fuel." [video]
space 
6 weeks ago by warrenellis
Europe readies 'space plane' for sub-orbital test flight
"Assembled in Italy, the Intermediate eXperimental Vehicle (IXV) is undergoing final ground tests at the ESA's headquarters in Noordwijk, north of The Hague, before being shipped to Kourou in French Guiana later this month."
space 
6 weeks ago by warrenellis
Interactive dark matter could explain Milky Way's missing satellite galaxies
"Scientists think clumps of dark matter – or halos – that emerged from the early Universe, trapped the intergalactic gas needed to form stars and galaxies."
space 
6 weeks ago by warrenellis
Japan space agency unveils asteroid hunting probe
"When it gets there, some time in 2018, it will release a powerful cannon which will fire a metal bullet at the asteroid's barren crust, once the probe itself has scuttled to safety on the far side of the rock."
space 
6 weeks ago by warrenellis
Plate tectonics found on Europa : Nature News & Comment
"...there may be giant plates of ice shuffling around on Europa — much as plates of rock do on Earth (S. A. Kattenhorn and L. M. Prockter Nature Geosci. http://dx.doi.org/10.1038/ngeo2245; 2014). Such active geology suggests that Europa’s icy surface is connected to its buried ocean — creating a possible pathway for salts, minerals and maybe even microbes to get from the ocean to the surface and back again."
space 
6 weeks ago by warrenellis
Sticky end for sex geckos sent into space by Russia
Five geckos sent into orbit to test the effect of weightlessness on the small lizards' sex lives have all died, the Russian space agency said on Monday.
space 
7 weeks ago by warrenellis
Leading expert on search for intelligent extra-terrestrial life optimistic
"The Fermi Paradox is a big extrapolation from a very local observation. We don't see any obvious evidence of galactic colonisation around here. So they couldn't be out there. Really? I don't see any evidence of mega fauna in my back yard, so maybe there aren't any …"

Interview that removes much of my last hope that SETI will prove to be of any use to anyone. Extant megafauna includes cows, probably not far from your own back yard, and evidencing themselves in your diet. Pleistocene megafauna are extinct, which, in your metaphor, DOES speak to Fermi -- you can't see them in your fucking back yard because they all died before you started looking.
space  seti 
7 weeks ago by warrenellis
How can we find tiny particles in exoplanet atmospheres?
"It may seem like magic, but astronomers have worked out a scheme that will allow them to detect and measure particles ten times smaller than the width of a human hair, even at many light-years distance.  They can do this by observing a blue tint in the light from far-off objects caused by the way in which small particles, no more than a micron in size (one-thousandth of a millimeter) scatter light."
space 
8 weeks ago by warrenellis
Evidence for supernovas near Earth
"It seems obvious that you wouldn't want a supernova exploding near Earth. Yet there is growing evidence that one did—actually, more than one. About 10 million years ago, a nearby cluster of supernovas went off like popcorn. We know because the explosions blew an enormous bubble in the interstellar medium, and we're inside it.

"Astronomers call it "the Local Bubble." It is peanut-shaped, about 300 light years long, and filled with almost nothing. Gas inside the bubble is very thin (0.001 atoms per cubic centimeter) and very hot (roughly a million degrees)—a sharp departure from ordinary interstellar material."
space 
8 weeks ago by warrenellis
The star that exploded at the dawn of time | Science/AAAS | News
"An ancient star a mere thousand light-years from Earth bears chemical elements that may have been forged by the death of a star that was both extremely massive and one of the first to arise after the big bang. If confirmed, the finding means that some of the universe’s first stars were so massive they died in exceptionally violent explosions that altered the growth of early galaxies."
space 
8 weeks ago by warrenellis
Measurement Data from HEAT-2X Static Test | Copenhagen Suborbitals
¨The large red circle indicates the situation around the engine compartment at about T+8s. It is precisely at this point the data transmission from the engine controller ceases, which seems reasonable. The smaller circle represents the burning gases blowing out through the approx. 1 cm large gap between the concrete blocks. This is the side were many of the network and power cables were going and they burned at several places.¨
space 
9 weeks ago by warrenellis
Super-black nano-coating to be tested for the first time in space
"An emerging super-black nanotechnology that promises to make spacecraft instruments more sensitive without enlarging their size will be tested for the first time on the International Space Station within a year."

SUPER-BLACK
nano  space  tech 
9 weeks ago by warrenellis
Life in space? Sea plankton discovered attached to ISS outer hull — RT News
"Russian scientists say they made a “unique” discovery while analyzing samples from the exterior of the International Space Station – traces of tiny sea creatures on the station’s windows and walls. It remains unclear how marine plankton ended up in space."
space 
9 weeks ago by warrenellis
Life on Mars? Implications of a newly discovered mineral-rich structure
"A new ovoid structure discovered in the Nakhla Martian meteorite is made of nanocrystalline iron-rich clay, contains a variety of minerals, and shows evidence of undergoing a past shock event from impact, with resulting melting of the permafrost and mixing of surface and subsurface fluids. Based on the results of a broad range of analytical studies to determine the origin of this new structure, scientists present the competing hypotheses for how this ovoid formed, point to the most likely conclusion, and discuss how these findings impact the field of astrobiology"
space 
9 weeks ago by warrenellis
Astronomers discover Thorne-Zytkow hybrid star for first time | Descrier News
"Thorne-Żytkow objects (TZOs) are believed to be formed when a red supergiant star begins to swallow a neutron star, which spirals towards the red supergiant’s core, interrupting its ongoing fusion process."
space 
11 weeks ago by warrenellis
Nasa validates 'impossible' space drive (Wired UK)
"The drive's inventor, Guido Fetta calls it the "Cannae Drive", which he explains as a reference to the Battle of Cannae in which Hannibal decisively defeated a much stronger Roman army: you're at your best when you are in a tight corner. However, it's hard not to suspect that Star Trek's Engineer Scott -- "I cannae change the laws of physics" -- might also be an influence. (It was formerly known as the Q-Drive.)"
space 
12 weeks ago by warrenellis
Sprites: A Chip-Sized Spacecraft Solution
"Peck’s work at Cornell’s Space Systems Design Studio has led to the development of Sprites, fully functional spacecraft each weighing less than a penny. You can think of a Sprite as a spacecraft on a chip without any constraints from onboard fuel."
space 
july 2014 by warrenellis
A Manifesto for Expansion
"The interstellar advocacy is not yet taken seriously by the opinion leaders of any nation, and has yet to win support from any government. That advocacy might do well to reflect on the history of the successful spaceflight advocacy, which took decades to sell its ideas, and only won success in stages."
space 
july 2014 by warrenellis
Stars as Stellar Engines
"a modified Shkadov thruster, a way of moving entire stars that the physicist Leonid Shkadov first described in 1987. In both cases, we’re talking about what can be called ‘stellar engines’ that use the resources of the star itself to create their propulsion. Would such a vast structure be detectible by another civilization?"
space 
june 2014 by warrenellis
Deep Time: Targeting Another Galaxy
"The numbers get more and more mind-boggling as you continue to work the equations. With that same 1 g acceleration (and just how you achieve that is of course the grand question), you can make it all the way to the center of the Milky Way in about 21 years — tens of thousands of years would have passed on Earth by the time you arrived at the galactic core. Or go for the ultimate journey: A voyage to the Andromeda galaxy. To reach M31 in a ship of this sort would take 28 years ship-time as you nudged ever closer, but never reached, the speed of light."
space 
june 2014 by warrenellis
NASA wants to send a quadcopter drone to Titan | sUAS News
"NASA wants to search Saturn’s moon Titan for life but they’re having trouble coming up with a good way to cover a large territory and obtain samples. Now they think they may have a good solution: A 22-pound quadcopter that will work from a mothership."
space  drones 
june 2014 by warrenellis
A View of the Deepest Future
"How far can biological Life extend into the Long Dark? A study by Robin Spivey extends Life’s tenure, in neutrino-annihilation warmed Ocean Planets, to 1025 years – and Beyond. That’s 100 times longer than the 1023 years we’ve reported here previously and some 1,000 trillion times longer than the time the Universe has presently existed. If the current Age of the Universe was a clock tick – a second -, then those 1025 years would be 20 million years."
space 
june 2014 by warrenellis
We could travel to new worlds in NASA's starship Enterprise | The Verge
"Rademaker worked together with NASA's Dr. Harold White to produce visual concepts for the craft. White and his team at NASA are hoping to make "faster-than-light" travel possible with Alcubierre drives. The drives, named for physicist Miguel Alcubierre, theoretically work by distorting space-time. By expanding the space behind a ship and contracting the space in front of it, the IXS Enterprise could drastically speed up our space travel potential, making the 4.3 light-year journey to Alpha Centauri in around two weeks."
space  design+fiction 
june 2014 by warrenellis
A Glassy Sea on Titan
"The second largest sea on Titan is Ligeia Mare, made up of methane and ethane in a body of liquid that is larger than Lake Superior. Now we have word that the surface of Ligeia Mare is so utterly still that it would appear like glass. "
space 
march 2014 by warrenellis
Extraterrestrial Dispersal Vectors
"A recent paper on Superhabitable Worlds [2] has suggested that there may be planets or planetary systems more clement to life than the environment of Earth. This implies the possibility that, although Earth looks like a unique oasis in the darkness of space, it may represent a cosmic region of sub-optimal habitability"
space 
february 2014 by warrenellis
Project "Outernet" looking to bring free Internet to entire world
"A small team of workers at a New York based non-profit organization called Media Development Investment Fund (MDIF) has announced its intention to build an "Outernet"—a global network of cube satellites broadcasting Internet data to virtually any person on the planet—for free. The idea, the MDIF website says, is to offer free Internet access to all people, regardless of location, bypassing filtering or other means of censorship."
comms  space  net 
february 2014 by warrenellis
Cosmology in ghost-free bigravity theory with twin matter fluids: The origin of "dark matter" [CL] | arXiver
"We study dynamics of Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime based on the ghost-free bigravity theory. Assuming the coupling parameters guaranteeing the existence of de Sitter space as well as Minkowski spacetime, we find two stable attractors for spacetime with “twin” dust matter fields: One is de Sitter accelerating universe and the other is matter dominated universe. Although a considerable number of initial data leads to de Sitter universe, we also find matter dominated universe or spacetime with a future singularity for some initial data. The cosmic no-hair conjecture does not exactly hold..." Science writing as demented poetry. My favourite.
sci  space 
december 2013 by warrenellis
We may all be Martians: New research supports theory that life started on Mars
New evidence has emerged which supports the long-debated theory that life on Earth may have started on Mars.
space 
august 2013 by warrenellis
[1111.6131] The Fermi Paradox, Self-Replicating Probes, and the Interstellar Transportation Bandwidth
"We also consider several other models that seek to explain the Fermi Paradox, most notably percolation theory and two societal-collapse theories. In the former case, we find that it imposes unnatural assumptions which likely render it unrealistic. In the latter case, we present a new theory of interstellar transportation bandwidth which calls into question the validity of societal-collapse theories."
space 
may 2013 by warrenellis
Astronomers conduct first remote reconnaissance of another solar system
"The results are "quite strange," Oppenheimer said. "These warm, red planets are unlike any other known object in our universe. All four planets have different spectra, and all four are peculiar. The theorists have a lot of work to do now.""
space 
march 2013 by warrenellis
Team discovers adaptations to explain strategies for survival on Mars
"Research from the University of Maryland School of Medicine has revealed key features in proteins needed for life to function on Mars and other extreme environments."
space 
march 2013 by warrenellis
Astrobiologists Find Ancient Fossils in Fireball Fragments | MIT Technology Review
"They say the stones contain fossilised biological structures fused into the rock matrix and that their tests clearly rule out the possibility of terrestrial contamination. "
space 
march 2013 by warrenellis
The 'habitable edge' of exomoons
"Astronomers have their fingers crossed that within the haul of data collected by NASA's Kepler mission, which has already detected nearly three thousand possible exoplanets, hide the signatures of the very first exomoons."
space 
march 2013 by warrenellis
Wow
"Evidence exists that a large natural nuclear reactor formed and operated on Mars in the northern Mare Acidalium region of Mars"
space 
february 2013 by warrenellis
Nearby ancient star is almost as old as the Universe
"A metal-poor star located merely 190 light-years from the Sun is 14.46+-0.80 billion years old, which implies that the star is nearly as old as the Universe"
space 
february 2013 by warrenellis
Future evidence for extraterrestrial life might come from dying stars
"Even dying stars could host planets with life—and if such life exists, we might be able to detect it within the next decade"
space 
february 2013 by warrenellis
Water on the moon: It's been there all along
""Because these are some of the oldest rocks from the moon, the water is inferred to have been in the moon when it formed," Zhang said."
space 
february 2013 by warrenellis
Radiation, Alzheimer’s Disease and Fermi
"“Galactic cosmic radiation poses a significant threat to future astronauts,” said O’Banion. “The possibility that radiation exposure in space may give rise to health problems such as cancer has long been recognized. However, this study shows for the first time that exposure to radiation levels equivalent to a mission to Mars could produce cognitive problems and speed up changes in the brain that are associated with Alzheimer’s disease.”"
space  med 
january 2013 by warrenellis
The Interstellar Gravitational Assist
"In a 1963 paper, Dyson speculated on how an advanced civilization might use a binary star system made up of two white dwarfs. Send a spacecraft into the system for a close pass around one of the stars and, depending on the mass and orbital velocity of the stars, it is thrown out of the binary system at velocities as high as 3000 kilometers per second. But Dyson took the idea even further. His paper, which appeared as a chapter in a book called Interstellar Communication (New York: Benjamin Press, 1963), described not just white dwarfs but the creation of a binary neutron star system as an engineered launch platform..."
space 
november 2012 by warrenellis
Interstellar travelers may be helped by physicist's calculations that solve the Pioneer anomaly
"Kopeikin's research suggests that the photons move faster than expected from the Newtonian theory thus causing the appearance of deceleration, though the craft were actually traveling at the correct speed predicted by the theory."
space  sci 
october 2012 by warrenellis
Astrobotic Technology assembles prototype of lunar water-prospecting robot
"Astrobotic Technology Inc. has completed assembly of a full-size prototype of Polaris, a solar-powered robot that will search for potentially rich deposits of water ice at the moon's poles. The first of its kind, Polaris can accommodate a drill to bore one meter into the lunar surface and can operate in a lunar regions characterized by dark, long shadows and a sun that hugs the horizon."
space  robots 
october 2012 by warrenellis
Lowering Life’s Chances on Super-Earths
". Rather than being planets much like the Earth but simply more massive — worlds characterized by thick atmospheres, plate tectonics, volcanic activity and magnetic fields — they may differ in fundamental ways. With internal pressures tens of times higher than those found in Earth’s interior, large viscosities and melting temperatures could have adverse consequences on the planet’s habitability."
space 
october 2012 by warrenellis
Red Crucifix sighting in 774 may have been supernova
A supernova may have actually been the mysterious "Red Crucifix" in the sky that is cited in the Anglo Saxon Chronicle for the year 774. New correspondence between a university student and Nature carries interesting observations that astronomers could be looking at a previously unrecognized supernova.
space  history 
july 2012 by warrenellis
Warp Drives May Come With a Killer Downside
"When the Alcubierre-driven ship decelerates from superluminal speed, the particles its bubble has gathered are released in energetic outbursts. In the case of forward-facing particles the outburst can be very energetic — enough to destroy anyone at the destination directly in front of the ship."
space 
may 2012 by warrenellis
On the hunt for high-altitude microorganisms
"XCOR Aerospace is a private California-based company that has developed the Lynx, a reusable launch vehicle that has suborbital flight capabilities. Low-speed test flights are expected to commence later this year, with incremental testing to take place over the following months."
space 
may 2012 by warrenellis
Image: The shake, rattle and roar of the J-2X engine
"The J-2X engine is the first new liquid oxygen and liquid hydrogen rocket engine developed in 40 years that will be rated to carry humans into space. "
space 
may 2012 by warrenellis
The most profitable asteroid is...
"Most Profitable: 253 Mathilde, a 52.8 km-diameter C-type (carbonaceous) asteroid that has an estimated value of over $100 trillion and estimated profit of $9.53 trillion (USD) "
space 
may 2012 by warrenellis
SpaceX, Bigelow announce private space station alliance | Ars Technica
"SpaceX and Bigelow Aerospace have announced a new marketing alliance for SpaceX transportation to Bigelow private space stations. SpaceX will take customers, both private and governmental, to orbit using its Dragon reusable space capsule; Bigelow will host them using its BA330 inflatable space habitats, which will presumably be launched on a larger rocket.  No announcement was made concerning who would carry the stations themselves to orbit."
space 
may 2012 by warrenellis
Cairo Calendar shows Egyptians discovered binary Algol first
"Algol, aka the Demon Star, is actually a binary star in the Perseus constellation, and has been the subject of speculation for hundreds of years. Now a group of Finnish researchers propose that the peculiar behavior of Algol was first noted by the Egyptians some 3200 years ago."
space  history 
may 2012 by warrenellis
Newfangled space-propulsion technology could help clean up Earth orbit
"Winglee and his students continue research in his Johnson Hall laboratory on the possibility of placing mag-beam units in orbit around Earth and around a planet such as Mars that humans might want to explore. With a unit on each end – one to give a spacecraft a high-velocity push on its journey and the other to slow it at its destination – a mission to Mars could be accomplished in as little as 90 days, rather than the 2.5 years it would take with conventional means."
space 
april 2012 by warrenellis
Rocket with secret payload launches from Calif.
Since the launch involved a classified cargo for the National Reconnaissance Office, no details were immediately available about whether it was boosted to its intended orbit.
space  pol 
april 2012 by warrenellis
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