çağrıl cömert

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How to predict the end of the universe

How can we gauge the age of the Universe – and when it might end? Cosmologist Renee Hlozek says we can do so by viewing light that has taken billions of years to reach us.<p>Renee Hlozek says there are vital clues about the fate of the Universe waiting to be discovered – clues 13 billion years in the …

Watch The Mars Rover Curiosity's First Year In Only 2 Minutes

A busy, if slow-moving, year in the life of a robot we crashed onto an alien world.<p>The Mars rover Curiosity has spent the past year driving around the surface of of its new home, drilling and digging and collecting samples and every once in awhile drawing inappropriate body parts for fun.<p>It's not a …

Could There Be A Planet Hidden On The Opposite Side Of Our Sun?

We ask a scientist who has peered around it.<p>The sun might seem like a pretty huge galactic blind spot, but we've already managed to glimpse behind it, and there's nothing there in the way of another Earth, says NASA scientist Michael Kaiser, "unless it's <i>awfully</i> tiny."<p>Kaiser is the project scientist …

APOD: Moon Over Andromeda (2013 Aug 01) Image Credit & Copyright: Adam Block and Tim Puckett http://apod.nasa.gov/apod/ap130801.html Explanation: The Great Spiral Galaxy in Andromeda (aka M31), a mere 2.5 million light-years distant, is the closest large spiral to our own Milky Way. Andromeda is visible to the unaided eye as a small, faint, fuzzy patch, but because its surface brightness is so low, casual skygazers can't appreciate the galaxy's impressive extent in planet Earth's sky. This entertaining composite image compares the angular size of the nearby galaxy to a brighter, more familiar celestial sight. In it, a deep exposure of Andromeda, tracing beautiful blue star clusters in spiral arms far beyond the bright yellow core, is combined with a typical view of a nearly full Moon. Shown at the same angular scale, the Moon covers about 1/2 degree on the sky, while the galaxy is clearly several times that size. The deep Andromeda exposure also includes two bright satellite galaxies, M32 and M110 (bottom). http://www.caelumobservatory.com/ http://www.cometwatch.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=130801 #APOD

The Case for Alien Life

Only one planet has been proven to support life: our own. But with at least 11 billion Earth-sized worlds in our galaxy orbiting in their stars' habitable zones, the odds that we are not alone are improving.<p>On Feb. 9, 2013, NASA's Curiosity rover found something on Mars that set a milestone in the …