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Depending on which Kindle you are using and how you are connecting to the Internet, Amazon may charge a modest fee for emailing an Ebook to your Kindle. For US customers, the fee is 15 cents for 1 MB of data (almost all of our Ebooks are less than 1 MB). For non-US customers, the fee is 99 cents for 1 MB of data.

When the government wields its power against its own people, every citizen becomes an enemy of the state. Will you fight the system, or be ground to dust beneath the boot of tyranny?

Here at English Tea Shop we produce the most delicious, refreshing and diverse range of succulent teas.
We’re sure you’ll find something new, undiscovered and exciting!

Editor’s note: In these last two weeks of 2017, we’ll be looking at a few selections that we haven’t yet discussed on AAS Nova from among the most-downloaded papers published in AAS journals this year. The usual posting schedule will resume in January.

Two scientists from the University of Delaware, James MacDonald and Dermott Mullan, recently derived the age of the quadruple star system KIC 7177553. The system appears to be younger than originally thought — it’s best modeled as being 32–36 million years old.

The KIC 7177553 system is intriguing because of its complex structure: it consists of two binaries (one of which is eclipsing) orbiting each other in a hierarchical structure. Observations of KIC 7177553 can teach us how hierarchical systems like this one form and evolve, but first we need to determine how old the system is so we know what stage of its evolution we’re seeing. The authors’ estimate of 32–36 million years is relatively young for stars; this age places them in the pre-main-sequence phase.

JavaScript seems to be disabled in your browser.
You must have JavaScript enabled in your browser to utilize the functionality of this website.

Depending on which Kindle you are using and how you are connecting to the Internet, Amazon may charge a modest fee for emailing an Ebook to your Kindle. For US customers, the fee is 15 cents for 1 MB of data (almost all of our Ebooks are less than 1 MB). For non-US customers, the fee is 99 cents for 1 MB of data.

When the government wields its power against its own people, every citizen becomes an enemy of the state. Will you fight the system, or be ground to dust beneath the boot of tyranny?

Here at English Tea Shop we produce the most delicious, refreshing and diverse range of succulent teas.
We’re sure you’ll find something new, undiscovered and exciting!

JavaScript seems to be disabled in your browser.
You must have JavaScript enabled in your browser to utilize the functionality of this website.

Depending on which Kindle you are using and how you are connecting to the Internet, Amazon may charge a modest fee for emailing an Ebook to your Kindle. For US customers, the fee is 15 cents for 1 MB of data (almost all of our Ebooks are less than 1 MB). For non-US customers, the fee is 99 cents for 1 MB of data.

When the government wields its power against its own people, every citizen becomes an enemy of the state. Will you fight the system, or be ground to dust beneath the boot of tyranny?

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Posted by 2018 article