Habitable Planet

Habitable Planets May Not Be as Far Away as First Thought

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New research has shown that earth-like planets may not be as far away as previously thought.  Prior research had indicated that  the ‘habitable zone’ where water is capable of existing, was around 300-600 light years away, but it is now believed that they may be as near as 13 light-years away.

The researchers based their calculations on planets already discovered by the U.S. Kepler telescope, and examined the question of which ‘red dwarf’ stars could have potentially habitable Earth-size planets in their orbits.

The telescope identified 95 planetary candidates orbiting red dwarf stars, which are the most commonly found stars in the Milky Way.  Out of this selection, many were rejected due to their size or temperature which would rule out their ability to support life.  However, three planets were identified which were both warm and approximately Earth-size.

The scientists have predicted that around 6% of the estimated 75 billion red dwarf stars should have an Earth-like planet and that the nearest one may only be just 13 light-years away.

The implication is that it may be much easier to find life beyond our solar system than previously thought. 

You can read more here.

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Human Origins

Silhouettes (Public Domain) in front of blood cells (Public Domain) and a gene.
Most people who have the Rh blood type are Rh-positive. There are also instances, however, where people are Rh-Negative. Health problems may occur for the unborn child of a mother with Rh-Negative blood when the baby is Rh-Positive.

Ancient Technology

Roman glass (not the legendary flexible glass). Landesmuseum Württemberg, Stuttgart.
Imagine a glass you can bend and then watch it return to its original form. A glass that you drop but it doesn’t break. Stories say that an ancient Roman glassmaker had the technology to create a flexible glass, ‘vitrium flexile’, but a certain emperor decided the invention should not be.

Ancient Places

Face of the coffin in which the mummy of Ramesses II was found. (Credit: Petra Lether, designed by Anand Balaji)
Usermaatre Setepenre Ramesses II, the third pharaoh of the Nineteenth Dynasty, was one of ancient Egypt’s longest-reigning monarchs. In an astonishing sixty-seven regnal years – the glory days of empire that witnessed unprecedented peace and prosperity – the monarch built grand edifices and etched his name on innumerable monuments of his forbears.

Opinion

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During the Early Woodland Period (1000—200 BC), the Adena people constructed extensive burial mounds and earthworks throughout the Ohio Valley in Ohio, Indiana, Pennsylvania, Kentucky, and West Virginia. Many of the skeletal remains found in these mounds by early antiquarians and 20th-Century archaeologists were of powerfully-built individuals reaching between 6.5 and eight feet in height (198 cm – 244 cm).

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