White Dwarf Surprise — Again!

White Dwarf Surprise — Again!

Nearly a year ago, Astrobites reported on an unexpected finding from the Kepler spacecraft: A pair of white dwarfs that were “outbursting”, becoming as much as 20 percent brighter every few days before quieting down again. Today’s paper adds another two outbursting white dwarfs, and begins to explore the reason for this hitherto unobserved behavior.

A Rock Of Unusual Size

A Rock Of Unusual Size

It seems that whenever we have a fact about exoplanets nailed down, an exception will quickly crop up. The authors of today’s paper claim to have spotted a planet over twice the diameter of the Earth, made from solid rock.