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Space News and Discussions

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#121
Craven

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This looks like early interview. If it would be new wouldn't they mention problems with conformation?
"I walk alone and do no evil, having only a few wishes, just like an elephant in the forest."

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#122
mic of orion

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Might be just a re-upload of old news, but it appears to be from just 2 days ago.

If it's new, then it would seem Gliese 581g is confirmed!

http://www.youtube.com/watch?v=


plz do not spam forum with nonsense, this is an old interview held last year and since than planet has been debunked by the astronomers as they couldn't find it when they took another look. Guy who posted that video is a conspiracy and ufo freak.
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#123
Time_Traveller

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Europe ends calls to stranded Mars probe

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It is looking increasingly grim for Russia's Mars mission Phobos-Grunt, which has been stuck circling the Earth since its launch in early November.


From http://www.bbc.co.uk...onment-16010332

“One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there and don't throw it away.”

 

Stephen Hawking


#124
wjfox

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Kepler 22-b: Earth-like planet confirmed

Astronomers have confirmed the existence of an Earth-like planet in the "habitable zone" around a star not unlike our own.

The planet, Kepler 22-b, lies about 600 light-years away and is about 2.4 times the size of Earth, and has a temperature of about 22C.

It is the closest confirmed planet yet to one like ours - an "Earth 2.0".

Read more: http://www.bbc.co.uk...onment-16040655

See also: www.nasa.gov/mission_pages/kepler/news/kepscicon-briefing.html


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#125
wjfox

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Team sees biggest black holes yet

A US team has found the two biggest "supermassive" black holes known to science, Nature journal reports.

Sitting at the centres of two nearby galaxies, the two objects have masses close to 10 billion times greater than our Sun.

Such large black holes had been suspected to exist, but, until now, the biggest known was some 6.3 billion times the mass of the Sun.

http://www.bbc.co.uk...onment-16034045


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#126
Roh234

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^The biggest known black hole has a mass of 18b Solar masses.

http://www.space.com...ers-scales.html

What is true, just, and beautiful is not determined by popular vote. The masses everywhere are ignorant, short-sighted, motivated by envy, and easy to fool. Democratic politicians must appeal to these masses in order to be elected. Whoever is the best demagogue will win. Almost by necessity, then, democracy will lead to the perversion of truth, justice and beauty. -Hans Hermann Hoppe


#127
Shimmy

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Black holes don't exist as can be seen in this proof:
http://news.sciencem...1-01.html?rss=1

#128
OrbitalResonance

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Graphic illustrating the sizes of planets with different compositions.

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Note the planet radius does not increase with its mass size. The radius of the planet deepens on density as well as mass.

I am regularly fascinated by the concept of terrestial rocky planets bigger than the Earth.

Water is a critical component of plate tectonics here on earth, ie subduction. It provides a weakening agent and lubricant for the crust. On planets like Venus where there are no oceans, the crust is too rigid for subduction to occour.

On super earths this may not be the case. The higher heat from below may override the need for water to weaken the crust an subduction may occur sans water. The crust on a super earth would also be thinner.

Here is a paper about it

http://arxiv.org/PS_...0710.0699v1.pdf
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#129
Logically Irrational

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Russia's Mars Probe Appears 'Dead in the Water'
http://www.space.com...ion-doomed.html

Russia’s troubled Phobos-Grunt spacecraft, which is stuck in low-Earth orbit due to an engine failure rather than on its way to Mars, appears to be doomed, with small pieces of the wayward probe already falling to Earth.
"I estimate that Phobos-Grunt will decay on Jan. 13, 2012, plus or minus eight days," said Ted Molczan of Toronto, a leader in the community of citizen satellite watchers.

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Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!

#130
mic of orion

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Not to worry, Putin will sort this probe out.
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#131
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Skywatchers enjoy lunar eclipse

Skywatchers have begun enjoying the last total lunar eclipse until 2014.

The spectacle, which occurs when the earth casts its shadow over the moon, will be visible from Australia, Asia and North America.

But indirect sunlight can still illuminate the Moon, turning it a dramatic shade of red.

The shadow started to fall at 11:33 GMT; the spectacle ends after 17:30 GMT. The total eclipse will last 51 minutes eight seconds.

http://www.bbc.co.uk...onment-16116227


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#132
Craven

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http://www.dailygala...h-for-life.html


Weekend Feature: Europa's Ocean --A NASA 2020 Mission in Search for Life



Researchers at NASA's Jet Propulsion Laboratory (JPL), are preparung a mission that could launch in 2020 and deliver the landers to Europa in 2026 to investigate whether life could ever have existed on the huge moon, which likely hosts an ocean of liquid water beneath its ice-shrouded shell.The proposed mission, much like NASA's recently launched Mars Science Laboratory Curiosity rover, it would assess the location's ability to support past and present life.

"Europa, I think, is the premier place to go for extant life," said JPL's Kevin Hand, who laid out the mission's basics in a talk here Thursday (Dec. 8) at the annual winter meeting of the American Geophysical Union. "Europa really does give us this opportunity to look for living life in the ocean that is there today, and has been there for much of the history of the solar system."

The researchers' concept calls for launching two identical landers (one a backup), each of which weighs 704 pounds (320 kilograms) and carries 79 pounds (36 kg) of scientific instruments. "That was sort of the overarching way to reduce some of the risk inherent in landing on the unknown surface of Europa," Hand said. He empasized that the lander mission is just a concept at the moment, and many details would have to be worked out before it could ever get off the ground.

Each robot would use a mass spectrometer, seismometers and several different cameras to study its landing site. The mass spectrometer would be able to detect various organic chemicals if they exist in Europa's ice, whereas the cameras and seismometers would gather data on the moon's geology..

NASA is also considering a different mission that would send a spacecraft to study Europa from orbit. The Jupiter Europa Orbiter mission would launch in 2020 and cost about $4.7 billion, officials said. The deepest ocean on Earth is the Pacific Ocean's Marianas Trench, which reaches a depth of 6.8 miles awesomely trumped by the depth of the ocean on the Jupiter's moon, Europa, which some measurements put at 62 miles.

Although Europa is covered in a thick crust of scarred and cross-hatched ice, measurements made by NASA's Galileo spacecraft and other probes strongly suggest that a liquid ocean lies beneath that surface. The interior is warmed, researchers believe, by the tidal stresses exerted on Europa by Jupiter and several other large moons, as well as by radioactivity.

Most scientists believe that the subEuropan seas are locked under tens of kilometers of ice. Heat is then conducted from the warm core by bulk convective motion of ice - huge chunks of frozen material literally carrying the heat away with them as they move up through the icy layer, shuffling and refreezing as they dump heat into space.

But Jupiter's Europa might not only sustain, but foster life, according to the research of University of Arizona's Richard Greenberg, a professor of planetary sciences and member of the Imaging Team for NASA's Galileo Jupiter-orbiter spacecraft.

Europa, similar in size to Earth's moon, and has been imaged by the Galileo Jupiter-orbiter spacecraft. Its surface, a frozen crust of water, was previously thought to be tens of kilometers thick, denying the oceans below any exposure. The combination of tidal processes, warm waters and periodic surface exposure may be enough not only to warrant life, but also to encourage evolution.

With Jupiter being the largest planet in the solar system, its tidal stresses on Europa create enough heat to keep the water on Europa in a liquid state. More than just water is needed to support life. Tides also play a role in providing for life. Ocean tides on Europa are much greater in size than Earth's with heights reaching 500 meters (more than 1,600 feet). Even the shape of the moon is stretched along the equator due to Jupiter's pull on the waters below the icy surface.

The mixing of substances needed to support life is also driven by tides. Stable environments are also necessary for life to flourish. Europa, whose orbit around Jupiter is in-sync with its rotation, is able to keep the same face towards the gas giant for thousands of years. The ocean is interacting with the surface, according to Greenberg, and "there is a possible that extends from way below the surface to just above the crust."

"The real key to life on Europa," Greenburg adds, "is the permeability of the ice crust. There is strong evidence that the ocean below the ice is connected to the surface through cracks and melting, at various times and places. As a result, the , if there is one, includes not just the liquid water ocean, but it extends through the ice up to the surface where there is access to oxidants, organic compounds, and light for photosynthesis. The physical setting provides a variety of potentially habitable and evolving niches. If there is life there, it would not necessarily be restricted to microorganisms."

Tides have created the two types of surface features seen on Europa: cracks/ridges and chaotic areas, Greenberg said.The ridges are thought to be built over thousands of years by water seeping up the edges of cracks and refreezing to form higher and higher edges until the cracks close to form a new ridge.

The chaotic areas are thought to be evidence of the melt-through necessary for exposure to the oceans.

The tidal heat, created by internal friction, could be enough to melt the ice, along with undersea volcanoes - a combination of factors would give organisms a stable but changing environment -- exactly the type that would encourage evolution.

Edited by Craven, 10 December 2011 - 05:58 PM.

"I walk alone and do no evil, having only a few wishes, just like an elephant in the forest."

"Laugh, and the world laughs with you. Weep, and you weep alone."

#133
Logically Irrational

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Colorado launches bid for spaceport near Denver
http://www.denverpos...ess/ci_19493801

Proposed location at Front Range Airport outside of Denver:
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Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!

#134
mic of orion

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#135
mic of orion

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It's dangerous to be right, when your government is wrong.
They that can give up essential liberty to purchase a little temporary safety, deserve neither liberty nor safety.

#136
Ru1138

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http://nextbigfuture...illions-of.html

Musk doesn't just want to stop at one human. In his Heinlein prize acceptance speech, he said he wants to put 10,000 people on Mars. Musk rarely makes public statements merely for effect but a call for 10,000 would-be Martians is extraordinary, even by his standards. When I query him on this point, he pauses. Is he reconsidering? Yes... but, as with so much else about Musk, not in a predictable way. "Ultimately we don't really want 10,000 people on Mars," he says, after letting the pause linger a few seconds more. "We want millions."


What difference does it make?


#137
Craven

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Unrealistic, but I hope he manages to do it. I can sign up :)
"I walk alone and do no evil, having only a few wishes, just like an elephant in the forest."

"Laugh, and the world laughs with you. Weep, and you weep alone."

#138
Ru1138

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Unrealistic, but I hope he manages to do it. I can sign up :)


You'd probably need some technical skills if you want to get on the first few flights.

What difference does it make?


#139
Craven

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I have great analytic skills and I'm working on PhD in telcommunications, I guess they'll find some use for me :)
"I walk alone and do no evil, having only a few wishes, just like an elephant in the forest."

"Laugh, and the world laughs with you. Weep, and you weep alone."

#140
Logically Irrational

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Not really news, but I just found this really cool picture I hadn't seen before:

Posted Image
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Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn!





Also tagged with one or more of these keywords: space exploration, aerospace engineering, astronomy, NASA, SpaceX, interstellar, telescopes, satellites, Mars, space

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