Dec 26 - Is Time Travel Possible?

December 26 Is Time Travel Possible? by:

Here's what scientists call a time loop. Green shows the short way through a wormhole. Red shows the long way through normal space. Since the travel time on the green path could be very small compared to the red, a wormhole can allow for the possibility of time travel. Image via Panzi/ Wikimedia Commons. Is time travel possible? Sure it is, says this physicist, but only if you have an object with infinite mass. How to build a time machine. Eureka! Astronomers find a Big Bang fossil Only 2 other fossil clouds are known in our universe, and both were serendipitous discoveries. Then astronomers began searching for these rare relics, and they found one! Read more. Why are stars brighter at this time of year? Looking up on December, January and February evenings, the stars seem brighter. Here’s why. View larger. | On June, July and August evenings - no matter where you are on Earth - you look toward the galaxy's center as indicated by the red arrows. On December, January and February evenings, you look away from the center, as indicated by the blue arrows. At this time of year, we're looking into our local spiral arm. Read more.

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Tonight … Moon and a Royal Star Regulus is considered the most important of the 4 Royal Stars of ancient Persia. The other 3 Royal Stars are Antares, Fomalhaut, and Aldebaran.

Like a hat in the sky Yuri Beletsky Nightscapes captured this lenticular cloud on a mid-December night in the Chilean Andes Mountains. Yuri said, “It was a truly majestic experience standing in the middle of the dry salt lake area peering into the endless sky.” Thanks Yuri!  Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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