Illustration of the planet 55 Cancri e, also called Janssen ... suggest that the scalding world could have an interior full of diamonds, covered by a surface ocean of molten lava.

There is a planet in the night sky that orbits its star in 18 hours, has a huge ocean of lava and a core made of diamonds. Welcome to 55 Cancri e—better known as the planet Janssen—whose ...

Astronomers were recently able to map the temperature of 55 Cancri E — a Super-Earth 40 light-years away — and discovered half the planet is almost completely molten. Follow Tech Insider ...

An curved arrow pointing right. 55 Cancri e – a planet eight times the size of Earth – is 40 light-years away. Astronomers just found out what its air is made of. Produced by Matthew Stuart.

This artist’s concept shows what the exoplanet 55 Cancri e could look like based on observations from NASA’s James Webb Space Telescope and other observatories. Credit: NASA, ESA, CSA, Ralf Crawford ...

Called a “Super Earth” because it’s roughly twice the size of our planet, 55 Cancri e is mighty hot. It orbits its star so closely that it’s tidally locked, meaning that the same side of ...

55 Cancri e, a super-Earth eight times heavier than Earth, orbits its star in just 17 hours. With temperatures soaring to 2,400°C, its interior may consist largely of diamond, thanks to its ...