There are some strange worlds out there and Corot-7b is one of them. A planet too hot and too cold for life, rocks that rain from the alien sky and molten lava oceans. Would you want to visit this hellish environment?
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Script -
Spread across our vast galaxy are strange alien worlds that scientists are seeking out and discovering every day. But the Exoplanet named COROT-7b is by far one of the strangest. On Earth, we have seen some weird things fall from the sky, from blood coloured rain to tennis ball sized hail stones and even animals, but on COROT-7b it rains magma and rock. This distant alien world is a colossal 489 lights years away from Earth in the constellation of Monoceros, so strap in and prepare for hyper speed as we have a long journey ahead. Astronomers suspect that COROT-7b was originally a giant gas planet which strayed too close to its star, evaporating its atmosphere until only rock was left. Gas giant exoplanets that lose their atmospheres are classified as chthonian planets, however COROT-7b's past is still unknown, meaning that it is still classed as Super Earth. But this distant world is a long way from resembling our home, instead, it is a planet from hell. Welcome to COROT-7b, this strange Exoplanet was the first rocky planet to be discovered outside of our solar system back in February 2009 by the COROT space telescope. A year on this nightmarish world only lasts 20.5 hours and it is nearly twice the size of Earth, about five times heavier, with a similar density. But as you can see this alien world is not a planet that humans will be standing on anytime in the future, as it orbits so close to its star that its surface offers hellish extremes. The Exoplanet is tidally locked, which means that the star side of the planet is constantly being scorched reaching temperatures above 2000 degrees Celsius, but the dark side is fully exposed to the coldness of space dropping to below minus 200 degrees Celsius. If we were able to stand on its surface, the star side would offer oceans of molten lava, cataclysmic volcanism and the planets host star dominating the sky as it slowly vaporises its landscape. Where as the dark side would be in perpetual nighttime, with towering mountains, deep valleys and the occasional volcanic eruption that launches molten material into a freezing cold environment, which cools rapidly and falls back as volcanic snow.
But the strangest feature of COROT-7b is that its tenuous atmosphere is made up from vaporised rock. Because of how hot the star side becomes any known rock would immediately sublimate, changing from a solid to a gas and bypassing any liquid phase. Remarkably, the atmosphere on this hellish world has weather just like we experience back on Earth, but with one major difference, Instead of condensing water falling from the sky as rain, the atmosphere of CoRoT-7b occasionally condenses and falls out of the alien sky as solid pebbles.
Attribution -
Evaporating Planet Animation - NASA, ESA, L. Calçada, Solar Dynamics Observatory
Lava explosions - USGS Hawaiian Volcano Observatory (HVO)
Music -
TheBlueMusk - New World Dawn (Purchased License) All content is Licensed under Creative Commons: By Attribution 3.0
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