Sen: Rosetta sees comet warming up.

Rosetta’s Comet Warms Up

Rosetta’s Comet Warms Up

Bad Astronomy
The entire universe in blog form
June 18 2015 11:30 AM

The Jets at Night Are Big and Bright (Clap Clap Clap Clap) Deep in the Heart of Comets

comet jets
Either an overexposed close-up of a comet showing jets of material, or looking into Godzilla's mouth. Take your pick.


While all eyes are on Philae, the little comet lander that could, the Rosetta orbiter is still observing 67P/Churyumov-Gerasimenko, and still making discoveries about how a comet behaves. Its newest is actually very cool … or actually warm: Jets of material are now being seen blowing out from the comet even after the direct sunlight is gone. This means the comet is getting more active.

I wrote all about it for my twice-monthly column at Sen. It’s subscription only, but you’ll find lots of great stuff there, including tons of news and images you can see for free.