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Never-Before-Seen Stage of Planet Birth Revealed

Science & Tech  (tags: planets, space exploration, planetary evolution )

- 818 days ago -
Astronomers studying a newborn star have caught a detailed glimpse of planets forming around it, revealing a never-before seen stage of planetary evolution.

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Arthur S. (88)
Wednesday January 2, 2013, 7:02 pm
Love to gaze at the stars and thank you for the news at site.

Kit B. (276)
Wednesday January 2, 2013, 7:12 pm

Good article and interesting pictures, thanks Freya. Someday this star may support a planet with life, it could happen.

Bob P. (410)
Thursday January 3, 2013, 6:35 am
Thanks Freya

Nelson Baker (0)
Thursday January 3, 2013, 3:25 pm

Winn Adams (211)
Thursday January 3, 2013, 4:13 pm

Lois Jordan (58)
Thursday January 3, 2013, 5:15 pm
Noted. Thank you, Freya. Such interesting info!

Phil P. (93)
Thursday January 3, 2013, 6:30 pm
Thanks for posting the article.
The ancillary article about the largest exoplanet ever discovered TrES-4 is really interesting. The "puffy" planet 1.7 times the size of Jupiter has extremely low densities, located about 1,400 light years away from Earth and zips around its parent star, 2X as big as out sun, in only three and a half days. Must be moving at an enormous velocity. With very low density and high velocity I wonder why it hasn't torn itself apart.

Tanya W. (54)
Friday January 4, 2013, 1:15 am
Too cool!!

Patricia H. (454)
Friday January 4, 2013, 3:40 am

Marianna molnar woods (9)
Friday January 4, 2013, 6:01 am

Shan D. (49)
Friday January 4, 2013, 6:32 am
@Phil: Maybe it has, and we won't know for another 1400 years.

Happy birthday, baby planet!

Kerstin Strobl (401)
Friday January 4, 2013, 8:13 am
Thank you for sharing Freya

Agnes W. (152)
Friday January 4, 2013, 1:35 pm

Paul carter block (28)
Friday January 4, 2013, 2:01 pm
Phil P. (January 3, 2013, 6:30 pm): TrES-4 is such a puffed-up bag of nothing because of its proximity to its star. It is effectively boiling up and is probably surrendering material at a colossal rate. Its life will not be long.
The big puzzle, in the early days of exoplanetary discovery, was why there seemed to be so many "Hot Jupiters", gas giants like our own but in very close orbits to their stars. This invited the suggestion that our own system is unique. I believe that this is an artefact of the primitive technology we had then. At first, we could detect only the largest-mass planets and those with the shortest years whose gravitational effects upon their stars were the most easily observed. With more advanced techniques, and with the unclouded eye of the Kepler space telescope, we are seeing more and more planets like Earth, and in orbits where liquid water can exist. And, as we know from experience here at home, where there is water there is life.

Winn Adams (211)
Friday January 4, 2013, 6:32 pm

Don Schwarz (5)
Friday January 4, 2013, 7:14 pm
Signed and noted.

We are not so much "seeing" these planets than "detecting" them by analysis of data showing the host star dimming as the planet passes in front. So, sorry, no pics! I wish we could see them.....

g d c. (0)
Saturday January 5, 2013, 12:56 pm

Susanna Westerholm (8)
Sunday January 6, 2013, 6:37 am
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