09 fevereiro 2017

Crescent Enceladus


Peering from the shadows, the Saturn-facing hemisphere of tantalizing inner moon Enceladus poses in this Cassini spacecraft image. North is up in the dramatic scene captured last November as Cassini's camera was pointed in a nearly sunward direction about 130,000 kilometers from the moon's bright crescent. In fact, the distant world reflects over 90 percent of the sunlight it receives, giving its surface about the same reflectivity as fresh snow. A mere 500 kilometers in diameter, Enceladus is a surprisingly active moon. Data collected during Cassini's flybys and years of images have revealed the presence of remarkable south polar geysers and a possible global ocean of liquid water beneath an icy crust.

from NASA http://ift.tt/2kSnEkD
via IFTTT

Related post





Nenhum comentário:

Postar um comentário

Related Posts Plugin for WordPress, Blogger...
eXTReMe Tracker
Designed ByBlogger Templates