James Webb Space Telescope discovers water around a mysterious comet

[Admin]

The James Webb Space Telescope has imaged a rare main asteroid belt comet, discovering water around the object that could help reveal how Earth became a wet planet teeming with life.

James Webb Space Telescope discovers water around a mysterious comet : Read more

 

[jdobbinsPHD]

The James Webb Space Telescope has imaged a rare main asteroid belt comet, discovering water around the object that could help reveal how Earth became a wet planet teeming with life.

James Webb Space Telescope discovers water around a mysterious comet : Read more

It seems quite a stretch to suggest that the water on Earth came from comets, considering the Earth's surface is 3/4 water, and the oceans are miles deep in some places. That total water volume coming from comets passing by or crashing into Earth challenges credibility.

 

[Voluntaryist]

"water ice" is an oxymoron. "Water" is liquid H20, "ice" is solid H20.

 

[Unclear Engineer]

"water ice" is an oxymoron. "Water" is liquid H20, "ice" is solid H20.

Not really an oxymoron - haven't you heard of "dry ice", i.e., solid CO2?

And, there are plenty of other frozen substances on the outer planets that would be liquid or gases here on Earth. So, "water ice", "CO2 ice", "ammonia ice" are all reasonable ways to convey the intended meaning, rather than just saying "ice" or "ices".

One the other hand, it does bug me that astophysicists have decided to call all sorts of elements heavier than helium "metals". Most of those elements are not what other scientific disciplines define as metals, and certainly not what laypeople think of as metals.