They discover an exoplanet that reflects like a mirror and has metallic clouds

It’s called LTT9779b, and it’s the most reflective exoplanet outside our solar system. But that is not its only peculiarity.

It has a temperature of 2000º Celsius and, despite being unexpected, there is a formation of clouds, but these are metallic.

The European space telescope Cheops discovered an exoplanet as bright as Venus

Image of the exoplanet LTT9779b
Image of the exoplanet LTT9779b captured by the European Space Agency. Credit@AgênciaEspacialEuropeia

The world of astronomy is in full swing. The European space telescope Cheops has discovered a new exoplanet, outside our solar system, which it has named LTT9779b. For that alone it would be news, but there are more details that catapult this new discovery to the pages of all media.

LTT9779b, which is more than 260 light-years from Earth, reflects 80% of its star’s light and is therefore reflected like a mirror and is the first exoplanet discovered to shine as brightly as the well-known planet Venus. .

This exoplanet is very close to its host star and its star-facing side experiences a temperature of 2000º Celsius. However, this temperature is considered too high for cloud formation to occur.

But, according to Vivien Parmentier, a researcher at the Côte d’Azur Observatory in France, LTT9779b does form clouds. According to the study on this exoplanet published in the journal Astronomy and Astrophysics, a flow of metal and silicate, a glass material, saturates the atmosphere of LTT9779b to the point that metallic clouds are formed.

But the French researcher points out that LTT9779b is even more peculiar. The exoplanet is five times the size of Earth, orbits its star in 19 hours, and is located in the region known as the “Neptune desert.”

And, according to Vivien Parmentier, these characteristics make this exoplanet unique. All because, so far, the known exoplanets that orbit their stars for up to 24 hours are gas giants up to ten times larger than Earth or rocky planets half the size of our planet. Plus: an exoplanet of this size should not exist in the “Neptune desert” region.

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