Astronomers have discovered the previously unknown exoplanet GJ 367b

GJ 367b is one of the smallest and "lightest" extrasolar planets known to date. Its radius is 72% and its mass is 55% of the mass of the Earth. Consequently, GJ 367b is smaller than Venus but larger than Mars. Its average density is 8.1 g/cm^3, which is close to the density of iron.

In its internal structure, GJ 367b should resemble Mercury and have an abnormally large nucleus. It could account for 86% of its internal volume. Perhaps the exoplanet has lost most of its mantle as a result of some kind of collision. According to another version, it represents the core of a gas giant, whose atmosphere was vaporized by the radiation of its star.

11.12.2021 Niederrhein, 47608. Danke an @JoyceScarlet für die Aufnahme

Der mysteriöse STEIN von INGÁ - Ein ungelöstes Rätsel

Eines der rätselhaftesten und umstrittensten archäologischen Denkmäler der Welt ist der “Pedra do Ingá”, zu deutsch “Stein von Ingá”. Er befindet sich im Flussbett des Ingá de Bocamarte, etwa drei Kilometer flussabwärts der Gemeinde Ingá im Bundesstaat Paraiba in Brasilien.

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