Re: China's plan for space junk?

From: Brian Weeden via Seesat-l <>
Date: Tue, 16 Jan 2018 14:22:25 -0500
If you read the original paper, this is a proposal for a relatively low
power laser to remove small pieces of space debris. Newsweek's
characterization of this involving a "giant laser" is definitely not true.

It would not work on a large object because the force you can impart scales
with because the force you're imparting scales inversely with the mass of
the object you're trying to move.

This is a topic of significant study by several research teams around the
world. There's this LightForce proposal put forward by NASA Ames several
years ago for a similar ground-based concept:

That NASA concept is now being developed by a commercial company called EOS
in Australia:

There's also this space-based laser proposal from a bunch of current/former
USG scientists:

The paper also cites several similar laser concepts that have been proposed
in recent years.


On Tue, Jan 16, 2018 at 1:21 PM, Art Glick via Seesat-l <
> wrote:

> I call B.S. on the Chinese!  Do they really think we're that stupid
> (fearless leader notwithstanding!)?  This is just a way of trying to
> mitigate criticism about developing space based weaponry.  What supposedly
> "works" on junk would work on an operational bird as well.
> And which would you rather have to dodge?  One big piece of easily
> trackable junk or the likely thousands of pieces of still hazardous
> detritus that would be created and possibly pushed into an even higher
> orbit by their laser?
> At 01:00 PM 1/16/2018, Ed Cannon [*] wrote:
> "China plans to destroy space junk with
>> giant lasers":
>> -lasers-781276
>> Here's the abstract of the original
>> research article, "Impacts of orbital
>> elements of space-based laser station
>> on small scale space debris removal":
>> Ed Cannon
>> San Antonio, Texas, USA
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Received on Tue Jan 16 2018 - 13:23:41 UTC

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