News from Planet Earth & Beyond

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New Discovery: Cas A Supernova Explosion--Seeding the Universe with Building Blocks of Life Heavy elements may be no more than rare cosmic pollutants, but they are exceedingly important to us. Without them, solid, rocky planets would be impossible, and the prospects for Earth-like life would be correspondingly dim. The iron Chandra X Ray...

Elusive Preon Stars --Do They Exist? A preon star is a proposed type of compact star made of preons, a group of hypothetical subatomic particles that could originate from supernova explosions or the Big Bang. Preons were originally proposed as quark constituents over three decades ago,...

Pulsar's Superluminal Speeds: Really Faster than Speed of Light? We learned in our intro to science courses that information cannot be transmitted faster than the speed of light. Yet laboratory experiments done over the last 30 years clearly show that some things appear to break this speed limit without...

Update: CERN's "Faster-than-Speed-of-Light" Claim Get's a Second Look Scientists who challenged current models of physics by reporting particles that broke the Universe's speed-of-light limit said on Friday they were taking a second look at their hotly debated experiment. "The new test began two or three days ago," said...

Image of the Day: New Spitzer Discovery--"Flat Galaxies" New observations from NASA's Spitzer Space Telescope provide strong evidence that the slender, bulgeless galaxies can, like their heftier counterparts, harbor supermassive black holes at their cores. Previously, astronomers thought that a galaxy without a bulge could not have a...

From the 'X Files': ET's May Have Left Message Code in Human DNA There's also a chance that past visits to Earth by intelligent aliens left signs much closer to home. But probability and the length of the universe's age suggest that any such alien visit would have taken place before humans ever...

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