More - Michael A'Hearn Quotes

These new findings are significant because they show that our technique is effective in finding ice when it is on the surface and that we can therefore firmly conclude that most of the water vapor that escapes from comets is contained in ice particles found below the surface.

Michael A'Hearn

 Effective

The comet is mostly empty, mostly porous. Probably all the way in, there is no bulk ice. The ice is all in the form of tiny grains.

Michael A'Hearn

 

The image clearly shows a spectacular impact.

Michael A'Hearn

 

We get one chance lasting 800 seconds to take all of the key data from impact until we've flown past.

Michael A'Hearn

 

Our analysis of data produced by Deep Impact is revealing a great deal, much of it rather surprising.

Michael A'Hearn

 

Prior to our Deep Impact experiment, scientists had a lot of questions and untested ideas about the structure and composition of the nucleus, or solid body of a comet, but we had almost no real knowledge,

Michael A'Hearn

 

We looked inside [a comet] for the first time.

Michael A'Hearn

 

I'm not convinced that there is a solid layer under there. If you look at the icy dust and the density we've deduced for the nucleus itself, something like 75 or 80 percent of the nucleus is empty space. So that tells me that there may be no solid layer.

Michael A'Hearn

 

is empty space.

Michael A'Hearn

 Space

Comets are more different than we thought they were.

Michael A'Hearn