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Posts Tagged ‘milky’

Latest research shows Milky Way could be teeming with alien life

Written by Seraphin. Posted in UFO's in the news

Researchers recently determined that there are potentially tens of billions of planets in the Milky Way galaxy where alien life could exist.

(Credit: Petigura/UC Berkeley, Howard/UH-Manoa, Marcy/UC Berkeley)

(Credit: Petigura/UC Berkeley, Howard/UH-Manoa, Marcy/UC Berkeley)

Scientists from University of California, Berkeley, and University of Hawaii, Manoa used data from NASA’s Kepler space telescope and the W. M. Keck Observatory to statistically determine that one in five Sun-like stars in our galaxy have Earth-sized planets that could host life. Erik Petigura, a UC Berkeley graduate student who led the study’s data analysis, explains in a press release issued by the W. M. Keck Observatory, “What this means is, when you look up at the thousands of stars in the night sky, the nearest sun-like star with an Earth-size planet in its habitable zone is probably only twelve light years away and can be seen with the naked eye. That is amazing.”

Andrew Howard, an astronomer with the Institute for Astronomy at the University of Hawaii, adds, “For NASA, this number – that every fifth star has a planet somewhat like Earth – is really important, because successor missions to Kepler will try to take an actual picture of a planet, and the size of the telescope they have to build depends on how close the nearest Earth-size planets are.”

Geoffrey Marcy

Geoffrey Marcy (Credit: NASA / Media Telecon)

The research team included UC Berkeley professor of astronomy Geoffrey Marcy who explained on the program PBS Newshour:

Of course, the properties of a planet that make it suitable for life is — the basics have to be water, because our own human bodies are made of water. All life-forms on the Earth depend on water. And so we assume — perhaps incorrectly — that life out there among the stars would also depend on liquid water.

But Marcy also cautions that not all these planets are necessarily hospitable to life. He explains, “Some may have thick atmospheres, making it so hot at the surface that DNA-like molecules would not survive. Others may have rocky surfaces that could harbor liquid water suitable for living organisms . . . We don’t know what range of planet types and their environments are suitable for life.”

The team’s research was published on November 4 in the journal Proceedings of the National Academy of Sciences.

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Other Milky Way solar systems more likely to support life

Written by Seraphin. Posted in UFO's in the news

Image credit: ESO

A new study suggests that solar systems in the Milky Way galaxy with stars resembling our sun are more likely to support life than our own solar system.

The La Silla Observatory in Chile. (Credit: ESO)

A team of geologists and astronomers at Ohio State University used data from the European Southern Observatory’s High Accuracy Radial Velocity Planet Searcher spectrometer at the La Silla Observatory in Chile to study eight “solar twins” of our sun. As the Daily Galaxy explains, these are stars that “very closely match the sun in size, age, and overall composition.”

The team specifically looked for elements like thorium and uranium, because those are essential to plate tectonics on Earth. According to the Daily Galaxy, “Plate tectonics helps maintain water on the surface of the Earth, so the existence of plate tectonics is sometimes taken as an indicator of a planet’s hospitality to life.”

Of the eight solar twins studied by the team, seven were found to contain significantly more thorium than our sun. From this, researchers speculate that planets orbiting those stars also contain more thorium, suggesting that the interiors of those planets are warmer than the planets in our solar system. If those planets do, in fact, have more internal heat than Earth, researchers say this would allow for a longer period of active plate tectonics, which, in turn, allows for a longer period in which life could develop.

Ohio State doctoral student Cayman Unterborn explains, “If it turns out that these planets are warmer than we previously thought, then we can effectively increase the size of the habitable zone around these stars by pushing the habitable zone farther from the host star, and consider more of those planets hospitable to microbial life.”

Unterborn presented the team’s findings at the recent American Geophysical Union meeting in San Francisco.

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Milky Way ‘Has 17 Billion Earth-Like Planets’ – Sky News

Written by Seraphin. Posted in Seti

Could there be 17bn Earth-sized planets in the Milky Way? – Siliconrepublic.com

Written by Seraphin. Posted in Seti

Milky Way home to billions of planets the size of Earth – Montreal Gazette

Written by Seraphin. Posted in Seti


Voice of America
Milky Way home to billions of planets the size of Earth
Montreal Gazette
It found 461 new candidate planets, bringing the total to 2,740 potential planets, said mission scientist Christopher Burke at the SETI Institute. Most of the new Kepler finds were driven by discoveries of Earth-size planets and super-Earths. Four of
NASA's Kepler Space Telescope discovers 461 new planetsScience Recorder

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Recent Starbursts in the Milky Way Galaxy’s Center – SETI Institute

Written by Seraphin. Posted in Seti


SETI Institute
Recent Starbursts in the Milky Way Galaxy's Center
SETI Institute
WASHINGTON — Researchers using the Stratospheric Observatory for Infrared Astronomy (SOFIA) have captured new images of a seven light-year-diameter ring of gas and dust surrounding the supermassive black hole at the center of the galaxy, and of a

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Study: Billions of Earth-size planets in Milky Way – Boston.com

Written by Seraphin. Posted in Seti

Study: Billions of Earth-size planets in Milky Way
Boston.com
It found 461 new candidate planets, bringing the total to 2,740 potential planets, said mission scientist Christopher Burke at the SETI Institute. Most of the new Kepler finds were driven by discoveries of Earth-size planets and super-Earths. Four of

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Study: Billions of Earth-size planets in Milky Way – Huffington Post

Written by Seraphin. Posted in Seti

Study: Billions of Earth-size planets in Milky Way
Huffington Post
It found 461 new candidate planets, bringing the total to 2,740 potential planets, said mission scientist Christopher Burke at the SETI Institute. Most of the new Kepler finds were driven by discoveries of Earth-size planets and super-Earths. Four of

seti – Google News

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THIS TRAIN GOES TO THE MILKY WAY

Written by Seraphin. Posted in UFO Wallpapers


THIS TRAIN GOES TO THE MILKY WAY
A new wallpaper has been posted to the Space gallery on Desktop Nexus.

Uploaded By: Betty49
Category: Other
Date Uploaded: 07/04/12
Native Resolution: 1157×770
Points: +1
Download Count: 0

View This Wallpaper Now

Desktop Nexus Space – New Wallpaper RSS Feed for Other

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Billions of planets in habitable zone of red dwarfs in Milky Way – DigitalJournal.com

Written by Seraphin. Posted in Seti


DigitalJournal.com
Billions of planets in habitable zone of red dwarfs in Milky Way
DigitalJournal.com
According to Space.com, Seth Shostak, senior astronomer at the Search for Extraterrestrial Intelligence Institute (SETI), in Mountain View, California, said: "The habitable zone would be very, very small. Consequently, the chances that you would
Billions of planets 'may have water, could support life'The West Australian

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