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Posts tagged alien megastructure

January 3, 2018


An image of The Crescent Nebula that is within Constellation Cygnus. Constellation Cygnus is the home of Tabby's Star.

It’s Not An Alien Megastructure After All

The intermittent dimming of Tabby's star was a long-time mystery in the Astronomy community.

April 14, 2016


This sparkling jumble is Messier 5 — a globular cluster consisting of hundreds of thousands of stars bound together by their collective gravity. But Messier 5 is no normal globular cluster. At 13 billion years old it is incredibly old, dating back to close to the beginning of the Universe, which is some 13.8 billion years of age. It is also one of the biggest clusters known, and at only 24 500 light-years away, it is no wonder that Messier 5 is a popular site for astronomers to train their telescopes on. Messier 5 also presents a puzzle. Stars in globular clusters grow old and wise together. So Messier 5 should, by now, consist of old, low-mass red giants and other ancient stars. But it is actually teeming with young blue stars known as blue stragglers. These incongruous stars spring to life when stars collide, or rip material from one another.

The Mystery of KIC8462852

The Kepler telescope has detected a large entity blocking light from a distant star called KIC8462852.

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