The exploration of space and the possibility of extraterrestrial life

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Seven of Nine

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Credit: Scientia

"Perhaps this is the scariest and most inspiring photograph in space."

Astronaut Bruce McCandless floats freely, untied from the safety of the Space Shuttle, with nothing but his Manned Maneuver Unit keeping him alive. During this space walk, the first in history, Bruce McCandless was 98 meters from the Challenger, without any connection cable.

McCandless was also part of the crew that put the Hubble Telescope in orbit in 1990.

Photo Credit: Vision of Astronomy

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Seven of Nine

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Credit: Starlight Attire

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The Ghoul of IC 2118
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Inspired by the Halloween season, this portrait shows a cosmic cloud with a scary visage
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This scene lies within the dusty expanse of nebula IC 2118 in the constellation Orion
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Often identified as the ‘Witch Head Nebula’, it has spiky stars for eyes with the ghost seeming to reach toward Orion’s hot supergiant star
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Seven of Nine

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Astronomers have finally found the cause of mysterious fast radio bursts

Fast radio bursts, or FRBs, have puzzled astronomers since they were first discovered
in 2007. Now, researchers have caught one coming from a dead star in our own galaxy.

After more than a decade of detective work, astronomers have found the best evidence yet for what’s causing fast radio bursts, or FRBs. These strange blasts of radio waves, which last just milliseconds, have become one of the most exciting mysteries in astronomy. And, in the end, it appears the prime suspect simply turned itself in.

Magnetars, short for “magnetic stars,” are the highly magnetic remnants of massive dead stars. Astronomers had long suspected these enigmatic beasts could be the source of FRBs. However, there’s only a handful of magnetars known in our Milky Way galaxy, and they all seemed too tame to be causing these extreme signals.

Then, in late April, a magnetar dubbed SGR 1935+2154 started blasting out X-rays near the center of our galaxy, some 30,000 light-years away. As the buzz about this object built, astronomers turned their ground and space-based telescopes in its direction just in time to catch X-rays, gamma rays — and eventually, the blast of a fast radio burst.

The discovery was detailed in a series of three papers published in the journal Nature on November 4.

It was the first FRB ever observed in our home galaxy, as well as the first FRB accompanied by other kinds of detectable radiation. Most importantly, it’s also the first FRB clearly associated with a single object.

The new findings have implications beyond our galaxy, too.

Click HERE to read the rest of the article.
 
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