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View Full Version : Ceres Bizarre Bright Spot Now Has a Companion



Fraser
2015-Feb-26, 04:10 PM
Aliens making dinner with a solar cooker? Laser beams aimed at hapless earthlings? Whatever can that – now those – bright spots on Ceres be? The most recent images taken by the Dawn spacecraft now reveal that the bright pimple has a companion spot. Both are tucked inside a substantial crater and seem to glow […]

More... (http://www.universetoday.com/119159/ceres-bizarre-bright-spot-now-has-a-companion/)

Buttercup
2015-Feb-26, 04:35 PM
Probably a McDonald's and a Burger King. :p

BigDon
2015-Feb-27, 12:23 AM
Thinking city and suburb too?

SRH
2015-Feb-27, 12:33 AM
Are there any reasons why this couldn't be a normal lava spouting volcano?

eburacum45
2015-Feb-27, 04:16 PM
Are there any reasons why this couldn't be a normal lava spouting volcano?

I think that there are several reasons why it is not a normal lava spouting volcano. Ceres is probably very ice rich, so if it is a volcano it would need to be an ice volcano.
http://en.wikipedia.org/wiki/Cryovolcano

There are few signs of ejecta on the surrounding surface, and no obvious mechanism that could cause this volcanism. I'd guess that it is fresh ice from a recent impact crater.

Ross 54
2015-Feb-27, 05:16 PM
It's currently reported that the bright spot has an albedo of at least 40 percent. Ice on a solid surface, like glacial ice on Earth, has an albedo of 20 to 40 percent.
The bright spot is not yet properly resolved by the latest images. We can assume it's smaller, and so, brighter than it appears. That would put the albedo above 40 percent, and, it seems, rule out the sort of ice we might expect to find on Ceres' surface.

Jerry
2015-Mar-02, 12:20 AM
Great mystery, and one we will definitely know more about very soon - including a very good estimate of the temperature and color of the bright spot; which should narrow down the number of possible explanations.

Trebuchet
2015-Mar-02, 01:23 AM
Great mystery, and one we will definitely know more about very soon - including a very good estimate of the temperature and color of the bright spot; which should narrow down the number of possible explanations.

My bold. That's the greatest part of this -- we'll know the explanation or at least have a very good idea.

And we'll soon see more of Pluto than ever before. Which will probably create more questions than answers. And that's a GOOD thing!