Ask!   About me   Disclaimer   My photography   

Astronomy with a helping of physics and a pinch of the other sciences.


Cracks in Europa reveal a tilted past

(Sen) - By analyzing the distinctive cracks crisscrossing the icy surface of Europa, NASA scientists have found evidence that this moon of Jupiter likely spun around a tilted axis at some point.
This tilt could influence calculations of how much of Europa’s history is recorded in its frozen shell, how much heat is generated by tides in its underground ocean, and even how long the ocean has been liquid.
"One of the mysteries of Europa is why the orientations of the long, straight cracks called lineaments have changed over time. It turns out that a small tilt, or obliquity, in the spin axis, sometime in the past, can explain a lot of what we see," said Alyssa Rhoden, a postdoctoral fellow with Oak Ridge Associated Universities who is working at NASA’s Goddard Space Flight Center.

Continue reading via SEN

Cracks in Europa reveal a tilted past

(Sen) - By analyzing the distinctive cracks crisscrossing the icy surface of Europa, NASA scientists have found evidence that this moon of Jupiter likely spun around a tilted axis at some point.

This tilt could influence calculations of how much of Europa’s history is recorded in its frozen shell, how much heat is generated by tides in its underground ocean, and even how long the ocean has been liquid.

"One of the mysteries of Europa is why the orientations of the long, straight cracks called lineaments have changed over time. It turns out that a small tilt, or obliquity, in the spin axis, sometime in the past, can explain a lot of what we see," said Alyssa Rhoden, a postdoctoral fellow with Oak Ridge Associated Universities who is working at NASA’s Goddard Space Flight Center.

Continue reading via SEN

— 1 year ago with 373 notes
#solar system  #europa  #jupiter 
  1. halphanxa reblogged this from press-start-to-continue-ok
  2. press-start-to-continue-ok reblogged this from imoriginalmeow
  3. imoriginalmeow reblogged this from nabi-key
  4. nabi-key reblogged this from dianifumi
  5. dianifumi reblogged this from astronemma
  6. happylittlecastiel reblogged this from setbabiesonfire
  7. an-inspired-fish reblogged this from offbynone
  8. thepiratedragon reblogged this from thescienceofreality
  9. shadie616 reblogged this from rockettripsandbattleships
  10. tracecode reblogged this from thescienceofreality
  11. mmartist91 reblogged this from thescienceofreality
  12. only-one-is-a-wanderer reblogged this from rockettripsandbattleships
  13. infernal-feline reblogged this from thescienceofreality
  14. atropineatrocity reblogged this from thescienceofreality
  15. vvrathb reblogged this from thescienceofreality
  16. quartzparchmentshears reblogged this from thescienceofreality
  17. 3nding reblogged this from thescienceofreality
  18. oh-look-in-your-distress reblogged this from thescienceofreality
  19. dyingscarecrow reblogged this from goodmorning-deer
  20. goodmorning-deer reblogged this from thescienceofreality
  21. pr0fe550reggplant reblogged this from thescienceofreality
  22. ashmely reblogged this from princesssmartsaysjeah
  23. the-cosmic-coffee reblogged this from thescienceofreality
  24. bets-bets reblogged this from thescienceofreality
  25. souportiffany reblogged this from thescienceofreality