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Science, Inventions & Space Discuss Space and Astronomy News Headlines at the General Discussion; Take your pick and this is just about half at the site. 11 Feb. 2012 .. Space and Astronomy News ...

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Old 02-11-2012, 06:35 PM
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Take your pick and this is just about half at the site. 11 Feb. 2012

Quote:
..Space and Astronomy News Headlines..


NASA Invites Twitter Fans to 2013 Space Budget AnnouncementMike Wall, SPACE.com Senior Writer
Space.com- SPACE.com - 9 hrs ago
NASA chief Charlie Bolden will roll out the space agency's next budget Monday (Feb. 13) in a room full of reporters — and some of the agency's die-hard Twitter fans. More »NASA Invites Twitter Fans to 2013 Space Budget Announcement

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Watery Alien Planets Might Be Stripped Dry by GravityCharles Q. Choi, Astrobiology Magazine Contributor
Space.com- SPACE.com - 9 hrs ago
Alien planets might experience tidal forces powerful enough to remove all their water, leaving behind hot, dry worlds like Venus, researchers said. More »Watery Alien Planets Might Be Stripped Dry by Gravity

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Europe's Newest Rocket to Launch on Maiden Voyage MondayCharles Q. Choi, SPACE.com Contributor
Space.com- SPACE.com - Fri, Feb 10, 2012
The new Vega rocket from Europe may be small, but it promises to do the job of at least twice that of most other rockets its size. More »Europe's Newest Rocket to Launch on Maiden Voyage Monday

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China Unveils Best Moon Map Yet from Lunar OrbiterTariq Malik, SPACE.com Managing Editor
Space.com- SPACE.com - Fri, Feb 10, 2012
China's space agency released an amazingly detailed map of the moon this week, marking the best view yet of the lunar surface as seen by a Chinese spacecraft, according … More »China Unveils Best Moon Map Yet from Lunar Orbiter

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NASA Fixes Computer Glitch on Mars-Bound Rover SPACE.com Staff
Space.com- SPACE.com - Fri, Feb 10, 2012
Engineers have fixed the glitch that caused a computer reset on the spacecraft carrying NASA's Curiosity rover shortly after it launched toward Mars in November, officials … More »NASA Fixes Computer Glitch on Mars-Bound Rover

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NASA budget will axe Mars deal with Europe: scientists AFP - Fri, Feb 10, 2012
US President Barack Obama's budget proposal to be submitted next week for 2013 will cut NASA's budget by 20 percent and eliminate a major partnership with Europe on Mars … More »NASA budget will axe Mars deal with Europe: scientists

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Scientists say NASA cutting missions to Mars SETH BORENSTEIN - AP - Fri, Feb 10, 2012
Scientists say NASA is about to propose major cuts in its exploration of other planets, especially Mars. And NASA's former science chief is calling it irrational. More »Scientists say NASA cutting missions to Mars

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Scientists say NASA cutting missions to Mars Seth Borenstein, AP Science Writer - AP - Fri, Feb 10, 2012
Scientists say NASA is about to propose major cuts in its exploration of other planets, especially Mars. And NASA's former science chief is calling it irrational.With … More »Scientists say NASA cutting missions to Mars

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Big NASA Budget Cuts to Slash Mars Missions, Experts SayMike Wall, SPACE.com Senior Writer
Space.com- SPACE.com - Thu, Feb 9, 2012
NASA's budget for the next fiscal year is likely to include deep cuts to planetary science programs, forcing the space agency to withdraw altogether from an international … More »Big NASA Budget Cuts to Slash Mars Missions, Experts Say

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Nike Launching Space Sneakers for NBA StarsRobert Z. Pearlman, collectSPACE.com Editor
Space.com- SPACE.com - Thu, Feb 9, 2012
Three icons of professional basketball will don special space-themed sneakers when they take the court for the NBA All-Star Game in Orlando later this month. More »Nike Launching Space Sneakers for NBA Stars

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Our Galaxy's Giant Black Hole May Munch on Asteroids SPACE.com Staff
Space.com- SPACE.com - Thu, Feb 9, 2012
The gigantic black hole at the heart of our Milky Way galaxy may be devouring asteroids on a daily basis, a new study suggests. More »Our Galaxy's Giant Black Hole May Munch on Asteroids
Space and Astronomy News Headlines - Yahoo! News
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Old 09-12-2017, 02:13 AM
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Lightbulb Re: Space and Astronomy News Headlines

UPDATE:

Astronomers Find Stars That Appear Older Than The Universe...

The Greatest Cosmic Puzzle: Astronomers Find Stars That Appear Older Than The Universe
Sep 7, 2017 - Starts With A Bang: The Universe is out there, waiting for you to discover it
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If you understand how stars work, you can observe the physical properties of one of them and extrapolate its age, and know when it had to have been born. Stars undergo a lot of changes as they age: their radius, luminosity, and temperature all evolve as they burn through their fuel. But a star's lifespan, in general, is dependent on only two properties that it's born with: its mass and its metallicity, which is the amount of elements heavier than hydrogen and helium present within. The oldest stars we've found in the Universe are nearly pristine, where almost 100% of what makes them up is the hydrogen and helium left over from the Big Bang. They come in at over 13 billion years old, with the oldest at 14.5 billion. And this is a big problem, because the Universe itself is only 13.8 billion years old.


In the Andromeda galaxy, the oldest individual stars are found in the galaxy's halo. However, globular clusters and random field stars may prove to contain the oldest stars of all in the entire Universe.

You can't very well have a star that's older than the Universe itself; that would imply that the star existed before the Big Bang ever happened! Yet the Big Bang was the origin of the Universe as-we-know-it, where all the matter, energy, neutrinos, photons, antimatter, dark matter and even dark energy originated. Everything contained in our observable Universe came from that event, and everything we perceive today can be traced back to that origin in time. So the simplest explanation, that there are stars predating the Universe, must be ruled out.

It's also possible that we've got the age of the Universe wrong! The way we arrive at that figure is from precision measurements of the Universe on the largest scales. By looking at a whole slew of features, including:

* The density and temperature imperfections in the cosmic microwave background, left over from the Big Bang,
* The clustering of stars and galaxies at present and going back billions of light years,
* The Hubble expansion rate of the fabric of the Universe,
* The history of star formation and galactic evolution,

and many other sources, we've arrived at a very consistent picture of the Universe. It's made up of 68% dark energy, 27% dark matter, 4.9% normal matter, about 0.1% neutrinos and 0.01% radiation, and is right around 13.8 billion years old. The uncertainty on the age figure is less than 100 million years, so even though it might be plausible that the Universe is slightly older-or-younger, it's extraordinarily improbable to get up to 14.5 billion years.

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Old 09-12-2017, 02:40 AM
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Default Re: Space and Astronomy News Headlines

haven't we screwed this planet up enough? do we have to muck up a galaxy far far away?
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Old 09-12-2017, 01:16 PM
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haven't we screwed this planet up enough? do we have to muck up a galaxy far far away?
,




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