sci.space.science Google Group

So bring me that asteroid..

bria...@blueyonder.co.uk (Brian Gaff) — Thu, 11 Apr 2013 11:14:25 UT

It occurs to me with this mission to move an asteroid and bring it into a
different orbit closer to the moon/earth system,that there are possible
dangers with this plan. Its got to be reasonably low in mass one supposes as
it would not be very easy to move it, on the other hand all this talking

Dark Matter Paradox / Black Hole Runaway

nos...@127.0.0.1 (David Spain) — Thu, 14 Feb 2013 00:23:32 UT

OK, I'll pose a problem. Time for an Original Post from me ;-)

If, as conjectured, dark matter pervades the Universe, (making up as
much as 24% of the mass in the universe) why hasn't/isn't any of this
been swallowed into the ultimate gravitational attractor. Why are there
so few black holes around and why are they so small if we are awash in

Dark Energy Dark matter

bria...@blueyonder.co.uk (Brian Gaff) — Wed, 13 Feb 2013 15:32:26 UT

Now if this stuff actually exists in such abundance how does it not muck up
all the calculations of trajectories of the many spacecraft sent out into
the suburbs of our solar system. One would have thought that if it was
there, it would in effect change the laws of gravity to some extent even

Determining orbit trajectories

dhort...@pdq.net (Doug Hortvet) — Mon, 11 Feb 2013 03:46:17 UT

Am most interested in the methods JPL uses to calculate orbits of NEOs and how frequently
the data used to calculate the orbits is updated for close approach objects.

Specifically:

1. Are JPL's algorithms proprietary or published?
2. If published - where can they be accessed?
3. What is the type and source of the data used in orbit determination?

Space Robotics / 19th IFAC Symposium "Automatic Control in Aerospace" in Wuerzburg

doris.aschenbren...@googlemail.com (Doris Aschenbrenner) — Wed, 16 Jan 2013 13:25:13 UT

"19th IFAC Symposium on Automatic Control in Aerospace"
2.-6.September 2013 in Wuerzburg (Germany)

is a prestigeous, traditional event gathering the international experts
on space robotics, spacecraft system design, attitude and orbit control
every 3 years. Wuerzburg is a historic city with interesting space

OT: Re: Is Space Really Empty

nos...@127.0.0.1 (David Spain) — Mon, 17 Dec 2012 21:08:03 UT

Well not really. Space-time at the margins can be quite odd.
For example, at the edge of the event horizon of a black hole, "a
virtual particle" can instantaneously pop into existence when its
"virtual twin" falls into the hole.

At the distances or intervals shorter than the Plank distance/interval,

breaking the law of physics\maybe?

brian.johnson.ad59...@spacebanter.com (brian johnson) — Tue, 30 Oct 2012 14:22:15 UT

If the universe is 13.7 billion years old and has been expanding from a
single point of originfollowing the big bang, and the hubble deep feild
is viewing galaxies 13 billion light years away, essentially your
looking 13 billion light years away 13 billion years into the pastnow if
I am correct, and scientist calculations are somewhat accurate about the

Moon quakes

bria...@blueyonder.co.uk (Brian Gaff) — Sun, 09 Sep 2012 16:42:28 UT

Are these purely due to the tide of the earth on the moon, as I heard
suggested on tv a few nights ago, and if they are, are they keeping the moon
internally warm?

Brian

--
The email is valid as bria...@blueyonder.co.uk
Blind user.

Re: Six posts in a year?

moor...@ignorethisgreenms.com (Greg (Strider) Moore) — Tue, 07 Aug 2012 00:07:55 UT

Interesting. Your post somehow got through w/o moderation (though I suspect
most people aren't seeing it).

And there are far more than 6 posts so far this year.

I count over 6 in June alone.

And a fair number in January with a few over the other months.

Sounds like your news server is fubarred.

Curiosity has landed

moor...@ignorethisgreenms.com (Greg (Strider) Moore) — Mon, 06 Aug 2012 05:41:12 UT

That's all that needs to be said!

Very long wavelengths

bria...@blueyonder.co.uk (Brian Gaff) — Sat, 09 Jun 2012 19:43:50 UT

It occurred to me the other day that if the universe is expanding faster and
faster, would there not be some wavelengths that now would be larger than
the visible universe? If that is the case one would imagine that would
render them undetectable.

Brian

--
The email is valid as bria...@blueyonder.co.uk

Our galaxy heading for collision with Andromeda Galaxy

psbhat...@gmail.com (signifiespost) — Sat, 09 Jun 2012 11:24:30 UT

NASA states that nothing will happen to our Solar system. The
collision will commence after 2 billion years. By that time, Sun
would have turned into a red dwarf star gobbling up all his planets.

Even otherwise, solar system would perish in countless supernova
explosions that follow the galaxy collision.

Citizen science and citizen space exploration

edward.v.wri...@gmail.com (Edward Wright) — Wed, 28 Mar 2012 20:17:32 UT

Citizens in Space, a project of the United States Rocket Academy,
plans to fly citizen-science experiments and citizen space explorers
on suborbital spacecraft. We have already acquired a contract for 10
flights with XCOR Aerospace and intend to acquire additional flight
from XCOR and other suborbital providers in the future.

Interplanetary Transport Network transit times

bernh...@bksys.at (Bernhard Kuemel) — Fri, 10 Feb 2012 02:55:45 UT

Hi sps!

Does anyone know about how long transit times in the ITN [1] are and how
often there are launch windows? I guess the launch windows are at least
one between 2 oppositions of the start and destination bodies.

Specifically, how long are travel times from Earth to Mars, asteroid
belt, Jupiter and moon (and vice versa).

Mass Spectrometer on ISS

bria...@blueyonder.co.uk (Brian Gaff) — Sun, 05 Feb 2012 16:15:49 UT

Does anyone know if any useful data is being generated by this device. There
have been a number of Sun related things going on recently, but I'd not seen
much said about these.
Brian

--
The email is valid as bria...@blueyonder.co.uk
Blind user.