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the NEOWISE data have returned two very

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important findings first we've been able

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to determine that we've found 93% of all

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the near-earth asteroids that are out

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there that are larger than 1 kilometer

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and thus we've satisfied the goals of

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the congressionally mandated Spaceguard

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project we've also been able to tell

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that there are somewhat fewer near-earth

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asteroids that are larger than 100

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meters and were previously fought before

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surveys had indicated that there were

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about 36,000 near-earth objects that

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were larger than about 100 years with

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the Neo ice data we've been able to

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determine that there are really only

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about 20,500 in the total population so

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somewhat fewer however fewer does not

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mean none that leaves about 15,000

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asteroids larger than 100 years that

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remain to be found the NEOWISE survey

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that we've carried out could be viewed

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as a pilot project for a larger survey

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when we look at asteroids from far away

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using a telescope they just look like

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tiny dots so something that is small but

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very reflective could look the same as

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something that's large but very dark and

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to a visible telescope they will look

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alike but if you use an infrared

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telescope likewise we can tell the

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difference we've shown with NEOWISE that

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infrared surveys are an efficient and

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effective way of learning something

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about the true numbers sizes and

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reflectivity zuv astronauts that are out

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there this is pretty amazingly cool I am

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so pleased to finally see this answer

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after working on this for years and