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Date: Sun, 20 Jan 91 02:30:21 -0500 (EST)
Subject: SPACE Digest V13 #064

SPACE Digest                                      Volume 13 : Issue 64

Today's Topics:
		   Re: Astronauts in the Van Allens
			 Re: THE BLUE PLANET
	       Payload Status for 01/15/91 (Forwarded)
	     NASA Headline News for 01/16/91 (Forwarded)
	       Payload Status for 01/17/91 (Forwarded)
		      Re: SPACE Digest V13 #055
			   Magellan article
	  Re: Metrics (was Re: Rotating Joints for Habitat)

Administrivia:

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----------------------------------------------------------------------

Date: 18 Jan 91 01:05:34 GMT
From: hub.ucsb.edu!ucsbuxa!3001crad@ucsd.edu  (Charles Frank Radley)
Subject: Re: Astronauts in the Van Allens

In article <4800001@hpcc01.HP.COM> flower@hpcc01.HP.COM (Graham Flower) writes:

  Human subjects are affected by ionizing radiation.
The degree of illness depends on the accumulated dose.
The longer the exposure, the greater the accumulate dose.
Short exposures are often harmless.
Prolonged exposure is often fatal.
   That is why you should not get a dental x-ray more than once
every six months...


>     I recently read that manned space missions about the earth are limited
>     to altitudes below 300 km or so due to the Van Allen belts. Could somebody
>     explain to me just why this is? Apparently transit through them is ok
>     (Apollo missions) so what is going on here?


>Graham Flower ms 90-TT               |  Better to have convictions and act on 
>Hewlett-Packard  350 W Trimble Rd    |  them, even if they are wrong, than to  
>Microwave Semiconductor Division     |  waffle in indecision endlessly.
>San Jose, California, 95131          |

------------------------------

Date: 18 Jan 91 11:07:22 GMT
From: mcsun!unido!mpirbn!p515dfi@uunet.uu.net  (Daniel Fischer)
Subject: Re: THE BLUE PLANET

>> ...THE DREAM IS ALIVE is now available on VHS cassette...
>> ...most IMAX theatres don't show this thrilling feature much anymore,

As more and more IMAX theatres open in Europe, THE DREAM IS ALIVE is very much
alive here, for it's usually part of the first programs. Seen it last summer
in Kopenhagen, e.g. 

A technical question: there are two kinds of giant-screen cinemas, one with
a flat screen ('5 stories high' or so go the ads), the other one working inside
a planetarium dome - which one of these is the actual 'IMAX' system? Is the
generic term for the planetarium-based version OMNIMAX? And: do both versions
use exactly the same footage (with square-sized 70x70mm-frames - the Dutch
'Omniversum' sells samples to visitors)? If so, where are there less distor=
tions from the point of view of an observer right in front of the screen resp.
near the center of the dome? Til recently I only knew the dome thing (Den Haag,
Boston, San Diego, Kopenh.), but the flat one in NYC was nearly as impressive.

                                 p515dfi@mpifr-bonn.mpg.de //// Daniel Fischer

------------------------------

Date: 18 Jan 91 18:09:53 GMT
From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov  (Peter E. Yee)
Subject: Payload Status for 01/15/91 (Forwarded)


    Daily Status/KSC Payload Management and Operations 01-15-91
    
    
    -    STS-35 ASTRO-1/BBXRT (at VAB)
    
    Freon servicing GSE preps and validations continue today.
    
    
    -    STS-39 AFP-675/IBSS/STP-01 (at VPF)
    
    CIRRIS vacuum servicing and UVLIM pumpdown will work today
    along with SPAS inspection.
    
    
    -    STS-40 SLS-1 (at O&C)
    
    CITE closeouts continue.
    
    
    -    STS-37 GRO (at PHSF)
    
    at the OPF, PCG and BIMDA fit checks will be performed.
    
    
    -    STS-42 IML-1 (at O&C)
    
    Spacelab integration continues today.
    
    
    -    STS-45 Atlas-1 (at O&C)
    
    Experiment and pallet staging continue.
    
    
    -    STS-46 TSS-1 (at O&C)
    
    pallet staging continues along with sets off-line ops.
    
    
    -    STS-47 Spacelab-J (at O&C)
    
    Rack 5 and 7 integration continues.
    
    
    -    STS-50 usml (at O&C)
    
    Rack 6 modifications continue today.
    
    
    -    STS-62 LITE (at O&C)
    
    Hardpoint installations continue.

------------------------------

Date: 18 Jan 91 18:32:34 GMT
From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov  (Peter E. Yee)
Subject: NASA Headline News for 01/16/91 (Forwarded)


             Headline News
Internal Communications Branch (P-2) NASA Headquarters

  Wednesday, January 16, 1991	Audio Service: 202 / 755-1788

This is NASA Headline News for Wednesday, January 16, 1991


The Combined Release and Radiation Effects Satellite 
released another small barium cannister this morning at 
1:25 am EST.  Marshall Space Flight Center CRESS project 
scientist Dr. David Reasoner said Monday's release produced 
excellent optical data, with one site tracking the barium for 
nearly two hours.  Reasoner said that significant structure 
within the magnetosphere was observed during that experiment.  
The next release is scheduled for tomorrow morning, with 
opportunities beginning at midnight and recurring every 30 
minutes until 2:00 am EST.

  * * * * * * * * * * * * * * * * * * * * * * * * * *  

Routine ground operations continue on the two orbiters in 
the Orbiter Processing Facility at Kennedy Space Center.  
Cross feed lines on Discovery's orbital maneuvering system pods 
have been connected, and leak check operations on those lines 
are underway.  Final checks of the power reactant storage and 
distribution system (PRSD) and water spray boiler were 
conducted yesterday.  All three auxiliary power units have 
been cleared for flight with only the final pressurization 
decay checks left on the schedule.  Rollout of Discovery to the 
Vehicle Assembly Building is scheduled for no earlier than 
January 29.

In OPF Bay 2, installation of APU number 3 on Atlantis, a 
hazardous work shift, has been completed and the work area is 
now open again for normal processing operations.  Main 
propulsion leak testing continues. Workers are also in the 
process of replacing Atlantis' crew cabin window 6.  Hydraulic 
fill and bleed operations will be conducted later this week, 
following completion of hydraulic operations on Discovery.

In the Vehicle Assembly Building, the left forward solid 
rocket booster segment for Atlantis' STS-37 stack was pinned to 
the existing segments on the mobile launcher platform in high 
bay 3. The right aft segment was transported to the VAB 
yesterday, with stacking operations continuing today.

Also in the VAB, Columbia continues to undergo tile 
refurbishment and replacement.  Landing gear checks are also 
currently in progress.

  * * * * * * * * * * * * * * * * * * * * * * * * * *  

NASA has selected nine scientists from institutions and 
universities throughout the U.S. to participate as both team 
members and interdisciplinary scientists in the Search for 
Extraterrestrial Intelligence Microwave Observing Project.  
The SETI project consists of two elements, a Targeted Search - 
which will use large radio astronomy antennas to perform the 
most sensitive search ever of stars within 80 light years, and a 
Sky Survey - which will use NASA Deep Space Network 
antennas to scan the entire sky.  The selected investigators 
now constitute the core of the project science team.  They 
will help refine the SETI search procedures, optimize the list of 
targeted solar-type stars, and develop methods to maximize the 
traditional radio astronomy science which also can be performed 
during SETI observations.  The team will be led by Ames 
Research Center Project Scientist Dr. Jill C. Tarter and Jet 
Propulsion Laboratory Deputy Project Scientist Dr. Sam Gulkis.

The observations will formally commence on Columbus 
Day 1992, with the Sky Survey system using the Goldstone 
DSN station, and the Targeted Search using the world's largest 
radio telescope at Arecibo, Puerto Rico.

	
Here's the broadcast schedule for Public Affairs events on NASA 
Select TV.  All times are Eastern.  **indicates a live program.

Wednesday, 1/16/91
	12:30 pm	Hubble Space Telescope 
			"Investigations of Massive Stars" (two new images
			taken by HST Goddard High Resolution Spectrograph),
			video captions and images only, no audio.

Thursday, 1/17/91
	11:30 am	NASA Update will be transmitted.
	12:30 pm	"First UIT Images" (the first images released by 
			the STS-35 Astro-1 Ultraviolet Imaging Telescope);
			"The White Storm on Saturn" (video made from HST
			Wide Field/Planetary Camera images of Saturn's
			white storm); video captions and images only, no audio.

Friday, 1/18/91
	12:30 pm	"Early Scientific Results from 
			Astro-1," taped press conference highlights from
			the AAS meeting in Philadelphia.

Wednesday, 1/23/91
	 9:30 am	**STS-39 Flight Director briefing from JSC.
	11:00 am	**STS-39 DOD payload briefing from JSC.
	 2:00 pm	**STS-39 crew briefing from JSC.
	

All events and times may change without notice.  This report is 
filed daily, Monday through Friday, at 12:00 pm, EST.  It is a 
service of Internal Communications Branch at NASA 
Headquarters.  Contact:  CREDMOND on NASAmail or at 
202/453-8425.
	

NASA Select TV:  Satcom F2R, Transponder 13, C-Band, 72 
degrees West Longitude, Audio 6.8, Frequency 3960 MHz.

------------------------------

Date: 18 Jan 91 18:43:03 GMT
From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov  (Peter E. Yee)
Subject: Payload Status for 01/17/91 (Forwarded)


    Daily Status/KSC Payload Management and Operations 01-17-91
    
    
    -    STS-35 ASTRO-1/BBXRT (at VAB)
    
    Freon servicing GSE preps and validations continue today
    along with DDU troubleshooting.
    
    
    -    STS-39 AFP-675/IBSS/STP-01 (at VPF)
    
    Payload to CITE disconnects will begin today.
    
    
    -    STS-40 SLS-1 (at O&C)
    
    Power on testing continues today.
    
    
    -    STS-37 GRO (at PHSF)
    
    At the VPF, facility preps continue.
    
    
    -    STS-42 IML-1 (at O&C)
    
    Spacelab integration continues today.
    
    
    -    STS-45 Atlas-1 (at O&C)
    
    Experiment and pallet staging continue.
    
    
    -    STS-46 TSS-1 (at O&C)
    
    Pallet staging continues along with sets off-line
    operations.
    
    
    -    STS-47 Spacelab-J (at O&C)
    
    Rack 5, 7 and 12 integration continues.
    
    
    -    STS-50 usml (at O&C)
    
    No work is scheduled for today.
    
    
    -    STS-62 LITE-1 (at O&C)
    
    Pallet cleaning will be performed today.

------------------------------

Date: Fri, 18 Jan 91 09:36:37 MEZ
From: UNF313%DBNRHRZ1.BITNET@BITNET.CC.CMU.EDU
Subject: Re: SPACE Digest V13 #055

unsubscribe

------------------------------

Date: 17 Jan 91 22:51:14 GMT
From: julius.cs.uiuc.edu!usc!elroy.jpl.nasa.gov!jato!mars.jpl.nasa.gov!baalke@apple.com  (Ron Baalke)
Subject: Magellan article

Associated Press -- 1/17/91
"Venus Landscape"
By Lee Siegel
 
"Some of the most cracked, squeezed and stretched landscape 
yet seen on Venus has been captured in pictures made by the
Magellan spacecraft, now halfway through its $744 million
mission."
 
The wire service quotes Annette deCharon, Brown University
Magellan scientist, as saying the new data represents "some of
the most complicated terrain we've seen in Magellan data."
 
The AP says that the region under study, the Alpha Regio
volcanic highland region of Venus, can be explained by several
different theories including massive floods of erupting lava,
squeezing of the planet's crust, and a third possibility -- linear
volcanic eruptions like those which occur in the Earth's mid-
oceanic ridges.
      ___    _____     ___
     /_ /|  /____/ \  /_ /|
     | | | |  __ \ /| | | |      Ron Baalke         | baalke@mars.jpl.nasa.gov
  ___| | | | |__) |/  | | |___   Jet Propulsion Lab | baalke@jems.jpl.nasa.gov
 /___| | | |  ___/    | |/__ /|  M/S 301-355        |
 |_____|/  |_|/       |_____|/   Pasadena, CA 91109 |

------------------------------

Date: 17 Jan 91 20:57:29 GMT
From: skipper!shafer@ames.arc.nasa.gov  (Mary Shafer)
Subject: Re: Metrics (was Re: Rotating Joints for Habitat)

In article <1991Jan13.160402.1020@mailer.cc.fsu.edu> cain@geomag.gly.fsu.edu (Joe Cain) writes:

           Now if we could just get NASA to report their orbits and other
   items on sci.space in metric units! You have to convince the pilots to
   think in terms of km instead of nautical miles, etc. 

_All_ civil aviation is conducted in feet (altitude) and knots (speed),
with the possible exception of _internal_ Aeroflot operations.  All
air traffic control is conducted in English, too.

Nautical miles and knots, based as they are on the circumference of the
earth, are very natural units for navigation over long distances.  You
know, great circle routes and all that.  That's why they were invented,
back in boats.

(Yes, I know that the meter was originally based on some fraction of
the circumference of the Equator, but it's not useful like the nautical
mile and the knot.)
--
Mary Shafer  shafer@skipper.dfrf.nasa.gov  ames!skipper.dfrf.nasa.gov!shafer
           NASA Ames Dryden Flight Research Facility, Edwards, CA
                     Of course I don't speak for NASA
 "A MiG at your six is better than no MiG at all"--Unknown US fighter pilot

------------------------------

End of SPACE Digest V13 #064
*******************