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“Alien Megastructure” May Actually Be Scraps of an Ingested Planet

Artist’s impression of the star KIC 8462852, surrounded by randomly transiting objects. Credit: NASA/JPL

For the past couple of years the astronomy world has been abuzz with news of the strange and randomly-occurring dimming of the star KIC 8462852—aka Tabby’s Star—located 1,276 light-years away in the constellation Cygnus and recently observed by NASA’s Kepler spacecraft. Hypotheses about the cause range from conservative (a transiting cloud of comets) to quite speculative (an “alien megastructure” constructed around the star) but to date nothing seems to perfectly fit the observations. Now, researchers from Columbia University and UC Berkeley are proposing a new idea: the dimming of Tabby’s Star is being caused by debris left over from a planet that was consumed by the star thousands of years ago, the orbiting scraps from a case of stellar infanticide.

Read more in a Universe Today article by Matt Williams: Finally, An Explanation for the Alien Megastructure?

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No This Is Not an Alien Cave Crab on Mars

Curiosity Mastcam image from Mars taken on Sept. 5, 2014. (NASA/JPL-Caltech/MSSS. Edit by J. Major.)

Curiosity Mastcam image from Mars taken on Aug. 5, 2014. (NASA/JPL-Caltech/MSSS. Edit by J. Major.)

I’m in a debunking mood today, probably brought on by the seasonal “double Moon hoax” that raises its oh-so-wrong head every August. (Read more on that nonsense here.) So here’s one more thing to say “NO” to: giant alien cave crabs on Mars.

Apparently there’d been some buzz recently in the “space woo” circles online over an image acquired by NASA’s Curiosity rover showing an exposed rock outcrop on Mars. In the image, tucked into a corner between a couple of larger rocks, is an oddly-shaped… thing… that some of the more “open-minded” (sarcasm intended) viewers have claimed is an alien organism, not unlike some that have made appearances in various sci-fi films over the years.

I’ve included the original Mastcam image above with the object in question outlined and “enhanced” on the left. Is this indisputable evidence of tentacled cave dwellers on the Red Planet? Hardly.

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Ganymede’s Aurorae Hint at an Ocean Ten Times Deeper than Earth’s

Illustration of Ganymede's auroral ovals, the stability of which hint at a global underground ocean. Credit: NASA, ESA, and G. Bacon (STScI).

Illustration of Ganymede’s auroral ovals, the stability of which hint at a global underground ocean. Credit: NASA, ESA, and G. Bacon (STScI).

It’s long been suspected that Jupiter’s giant moon Ganymede may harbor a subsurface ocean of liquid water beneath its icy yet hard-as-rock crust, and now some ingenious observations with the Hubble Space Telescope are making an even more convincing case for it!

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Enceladus Sprays Its Secrets To Cassini

Cassini image of Enceladus from Dec. 2010 showing the moon's icy jets and the hazy E-ring (NASA/JPL/SSI)

Enceladus, Saturn’s 318-mile-wide moon that’s become famous for its ice-spraying southern jets, is on astronomers’ short list of places in our own solar system where extraterrestrial life could be hiding — and on March 27, NASA’s Cassini spacecraft was in just the right place to try and sniff it out.

Why does Cassini team director Carolyn Porco think Enceladus is THE place in the solar system where we are most likely to find life? Find out here.

Breaking News: Kepler Team Spots First Earth-Sized Exoplanets

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The video above sums up the big astro-news of the day: NASA’s Kepler mission has confirmed the existence of not one but TWO Earth-sized planets orbiting a Sun-like star 1,000 light-years away. This is a big deal!

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