NASA is saying that STS-119 will not launch before Sunday, 15Mar09 at the earliest. Discovery has to be launched before 17Mar09 or the mission will have to be truncated to get the Shuttle away from the ISS before the Soyuz launches to deliver the Expedition 19 crew or The Soyuz launch will have to be delayed, which has not appeared in any of the contingencies made public.
When white light is sent through a prism it is broken up into the constituent colors of the spectrum:
<-highest frequency lowest frequency->
Stars exhibit color increasing in frequency as their temperature increases:
| Class | Color | Temperature | Example |
|---|---|---|---|
| O | violet-white | >30,000 k | λ Ori |
| B | blue-white | 12,000-30,0000 k | Rigel |
| A | white | 8000-12,000 k | Sirius |
| F | yellow-white | 6000-8000 k | Procyon |
| G | yellower-white | 5000-8000 k | Sun |
| K | orange | 3000-5000 k | Arcturus |
| M | red | <3000 k | Antares |
| ? | If white light is the sum of all colors of the spectrum how can there be white stars? |
| ? | If there are white stars why are there stars of other colors? |
| ? | Why are there no green stars? |
| ? | Why do white stars appear on the H-R Diagram where green stars should be? |
Expedition 18 had to evacuate ISS to the Soyuz lifeboat capsuel today when mission controllers got blindsided by part of spent rocket motor that was predicted to make a close enough approach to ISS to require an evasive maneuver for whih there was not sufficient time to perform. The debris passed by without impacting ISS and the Expedition 18 returned back to work. The Spaceflight Now article says that an impact would have been potentially catastrophic but the Soyuz capsule was not detached and moved away from ISS. The hatches were "soft locked" in case there was an impact and the astronauts had to leave.
| ? | If we have all this great tracking that is watching space junk to give warning of impending close approaches why was this warning given at the 11th hour. |
| ? | If the debris had hit ISS and the results were a catastrophic failute whould it have been safe for the Soyuz capsule to detach and leave the scene amidst the resultant debris field? |
| ? | What would have happened if STS-119 had launched on schedule and ISS had to be moved? How far would ISS have been moved? How would the rendesvous be accomplished? |
| ? | If the ISS had been destroyed and if the Shuttle had sustained a foam impact on launch damaging it to the point that it was going to have to go to ISS to wait for the crew to be rescued by another shuttle what would be done to rescue the Shuttle crew? |
On Friday the 13th of March Reuters reported that that piece of space junk was larger than originally estimated.
| Observing Location | Bowery @ Great Jones St, New York, NY | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Observational Period | 2045-2100 EDT | ||||||||||||||||
| Atmospheric Conditions |
I could see clouds overhead reflecting back light-pollution. They appeared to cover almost all of the zenith. There were some dark spots that might have been voids or just thin spots in the lowering cloud base. I didn’t see any stars anywhere.
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| Instruments | Naked-eye - Charlie | ||||||||||||||||
| Observing Party | Charlie Ridgway |
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