Exocomets around Beta Pictoris (art)

Exoplanets

Found: Exoplanet in the "Hot Neptune Desert" & Exocomets Around Beta Pictoris

Two teams of astronomers have announced the discovery of a Neptune-size planet in an unexpected orbit and three exocomets whizzing around nearby star Beta Pictoris.

Exoplanets

Disk Around HR 8799 Hints at Hidden Fifth Planet

A high-resolution ALMA image of the HR 8799 planetary disk suggests undiscovered planet.

disintegrating planet or asteroid

Exoplanets

White Dwarf Eats Mini Planet?

Astronomers have detected debris around a white dwarf that might be from one or more disintegrating rocky planets.

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