Related topics: stars · planets

Chandra sees eclipsing planet in X-rays for first time

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star.

Sunny super-Earth?

(Phys.org) —Researchers from NAOJ and the University of Tokyo have observed the atmosphere of super-Earth "GJ3470b" in Cancer for the first time in the world using two telescopes at OAO (Okayama Astrophysical Observatory, ...

Investigating exoplanet surfaces

In order to better understand the composition of rocky exoplanets, researchers have proposed a method to identify chemical signatures from surface materials. A better understanding of exoplanet surface compositions will help ...

Planet 'devoured in secret' by its own sun

(Phys.org)—A planet roughly 1.4 times the size of Jupiter is being consumed by its own star behind a shroud thanks to a magnesium veil absorbing all of certain light wavelengths, according to new observations by the Hubble ...

A hot potential habitable exoplanet around Gliese 163

A new superterran exoplanet (aka Super-Earth) was found in the stellar habitable zone of the red dwarf star Gliese 163 by the European HARPS team. The planet, Gliese 163c, has a minimum mass of 6.9 Earth masses and takes ...

Dramatic changes spotted in HD 189733b exoplanet atmosphere

(Phys.org) -- Astronomers using the NASA/ESA Hubble Space Telescope have seen dramatic changes in the upper atmosphere of a faraway planet. Just after a violent flare on its parent star bathed it in intense X-ray radiation, ...

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