NASA readies Artemis II for a manned launch

[Huskyguy68]

I don't know of any deniers , but some things about landing on the moon with humans 6 times and making it back successfully
Make you go hmmmm... especially with technology they had at that time

I also wonder about the claims i heard from Space EXPERTS saying the cosmic rays in space would penetrate any space ship/rocket and any astronaught suit, killing people instantly.
The material would have to super thick and very heavy .. ...so were things invented back then and now that to stop the cosmic rays deadly force? Or was it i heard/read just some myth and or easily taken care of?

 

[JeffKeryk]

The Moon is about 240,000 miles from Earth, right? Artemis takes about 5 days. Tomorrow baby!

 

[SC Maintenance]

I also wonder about the claims i heard from Space EXPERTS saying the cosmic rays in space would penetrate any space ship/rocket and any astronaught suit, killing people instantly.
The material would have to super thick and very heavy .. ...so were things invented back then and now that to stop the cosmic rays deadly force? Or was it i heard/read just some myth and or easily taken care of?

The Van Allen radiation belts. The conspiracy theorists theorized it would kill the astronauts.

Nasa claimed that they didn't spend long enough in the belts to cause issues, and they avoided the most intense part of the belt - there shape corelates with the earths magnetic field.

I don't know what to believe, but I do know that you can take a lot of radiation and still live. Just living in Denver give you about double the radiation exposure than living at sea level.

 

[E365]

Orion is now in the moon’s sphere of influence (moon’s gravity is stronger than the earth’s). Looks like it’s still slowing down though. Sounds like around 7pm tonight (eastern) it reaches its furthest point from earth.

 

[Snagglefoot]

I like that suspenseful time when they lose communication behind the moon then come out from behind it. Another great reason to cheer.

 

[tcp71]

The Van Allen radiation belts. The conspiracy theorists theorized it would kill the astronauts.

Nasa claimed that they didn't spend long enough in the belts to cause issues, and they avoided the most intense part of the belt - there shape corelates with the earths magnetic field.

I don't know what to believe, but I do know that you can take a lot of radiation and still live. Just living in Denver give you about double the radiation exposure than living at sea level.

Didn't they line the suits with gold foil for that reason?

https://spinoff.nasa.gov/spinoff199...ed mylar,dangerous effects of solar radiation.

 

[Owen Lucas]

I like that suspenseful time when they lose communication behind the moon then come out from behind it. Another great reason to cheer.

Apparently they are communicating via laser back to earth, interesting!

 

[SC Maintenance]

Didn't they line the suits with gold foil for that reason?

https://spinoff.nasa.gov/spinoff1997/hm2.html#:~:text=Many satellites carry gold-coated mylar,dangerous effects of solar radiation.

Could be - don't know. Anything high density is a good radiation protector.

The worst parts of the van allen belt produce around 100rem per hour - or one sievert. Nasa say they avoided the worst parts so could be a fraction of that. They also say the aluminum capsule provided a fair bit of protection - which is likely true. Radition sickness takes a larger dose for most people.

1/3 of the Apollo astronauts died from cancer. Its not really definite, but

 

[Owen Lucas]

Could be - don't know. Anything high density is a good radiation protector.

The worst parts of the van allen belt produce around 100rem per hour - or one sievert. Nasa say they avoided the worst parts so could be a fraction of that. They also say the aluminum capsule provided a fair bit of protection - which is likely true. Radition sickness takes a larger dose for most people.

1/3 of the Apollo astronauts died from cancer. Its not really definite, but

• Artemis crew protection relies on hydrogen-rich materials, including specialized plastics, to effectively absorb cosmic rays while reducing dangerous secondary particle production.

• Key safety measures include using the spacecraft’s water supply for shielding, establishing a designated central "safe zone" during solar events, and employing advanced monitoring systems to track radiation in real-time.

 

[Huskyguy68]

1/3 of the Apollo astronauts died from cancer. Its not really definite, but

That does sound scary, but in general, regardless of going up in space, us boring humans down here on Earth seem to be getting all sorts of cancers .
40% of us.
''Approximately 1 in 2 to 1 in 3 people will develop cancer in their lifetime, with risks heavily influenced by age, lifestyle, and genetics. While risk increases significantly after age 50, overall lifetime risk is around 40–44%. Preventable factors like smoking and diet heavily influence these odds.''
If it ain't cancer, it seems to be heart attacks. My father had colon cancer before he died 4 years ago. Among other things.
My cousin's husband currently has a form of cancer. Young and old seems it's always '' oh you heard who died of cancer?''.

 

[Owen Lucas]

1/3 of the Apollo astronauts died from cancer. Its not really definite, but

That does sound scary, but in general, regardless of going up in space, us boring humans down here on Earth seem to be getting all sorts of cancers .
40% of us.
''Approximately 1 in 2 to 1 in 3 people will develop cancer in their lifetime, with risks heavily influenced by age, lifestyle, and genetics. While risk increases significantly after age 50, overall lifetime risk is around 40–44%. Preventable factors like smoking and diet heavily influence these odds.''
If it ain't cancer, it seems to be heart attacks. My father had colon cancer before he died 4 years ago. Among other things.
My cousin's husband currently has a form of cancer. Young and old seems it's always '' oh you heard who died of cancer?''.

One way to fight this is by cario, the increased movement of blood through the body applies shearing forces on cancer cells, tearing them apart. Not guaranteed to stop cancer of course, but worth it I'd say.

I break a sweat on the exercise bike, for about 30 mins, I try each day buit it's not always as easy:

• Increased Cardiac Output: During vigorous exercise, your heart rate and blood pressure rise, significantly increasing the volume and speed of blood moving through your arteries and veins.
  
  
• Fluid Shear Stress: This rapid blood flow creates "shear stress," which is the frictional force of the fluid rubbing against the walls of the vessels and anything inside them.
  
  
• Mechanical Destruction: Unlike normal blood cells, CTCs are often large, rigid, and fragile. The high shear stress from intensive exercise can physically rupture these cells (necrosis) or trigger internal "death signals" (apoptosis) before they can reach a new organ to grow.
  
  
• Lab Evidence: Research published in Scientific Reports demonstrated that shear stress levels mimicking intensive exercise (60 dynes/cm²) killed over 90% of circulating breast, lung, and ovarian cancer cells within four hours. Low shear stress (resting levels) had almost no effect on their survival.
  
  
• Animal Models: Studies on mice have shown that those allowed to exercise (like wheel running) have significantly lower rates of metastasis compared to sedentary mice, partly due to this mechanical clearing of CTCs from the blood.
  
  
• Human Correlation: Clinical data consistently shows that cancer patients who engage in regular, high-intensity aerobic exercise have a lower risk of cancer recurrence and death. While this is likely due to a combination of factors (like a boosted immune system), the "shearing" of CTCs is considered a primary mechanical contributor.
  
  
  https://pubmed.ncbi.nlm.nih.gov/28054593/#:~:text=High Shear Stresses under Exercise,doi: 10.1038/srep39975.
  
  

 

[Number_35]

Could be - don't know. Anything high density is a good radiation protector.

The worst parts of the van allen belt produce around 100rem per hour - or one sievert. Nasa say they avoided the worst parts so could be a fraction of that. They also say the aluminum capsule provided a fair bit of protection - which is likely true. Radition sickness takes a larger dose for most people.

1/3 of the Apollo astronauts died from cancer. Its not really definite, but

But not very many of the members of the early astronaut groups died young. Of those who died somewhat prematurely, I think Don Eisele, Jim Irwin, and Ron Evans died of heart disease. Pete Conrad was in a motorcycle accident. Gus Grissom and Ed White died in the Apollo 1 fire.

Excluding accidents, I think they have been a long-lived group.

It would interesting to correlate time spent in space and mortality.

Perhaps low Earth orbit is not bad. Maybe it's passing through the Van Allen belts that exposes one to a lot of radiation.

Jim Lovell, John Young, and Gene Cernan all flew to the moon twice, and all lived into their 80s.

 

[SC Maintenance]

But not very many of the members of the early astronaut groups died young. Of those who died somewhat prematurely, I think Don Eisele, Jim Irwin, and Ron Evans died of heart disease. Pete Conrad was in a motorcycle accident. Gus Grissom and Ed White died in the Apollo 1 fire.

Excluding accidents, I think they have been a long-lived group.

It would interesting to correlate time spent in space and mortality.

Perhaps low Earth orbit is not bad. Maybe it's passing through the Van Allen belts that exposes one to a lot of radiation.

Jim Lovell, John Young, and Gene Cernan all flew to the moon twice, and all lived into their 80s.

Well, that would lend to the conspiracy that they never actually left the Hollywood studio.

 

[Number_35]

Well, that would lend to the conspiracy that they never actually left the Hollywood studio.

Yup, any bit of evidence can be used however one wants.

 

[JeffKeryk]

Yup, any bit of evidence can be used however one wants.

I ordered the sun to come up this morning when we were out for our 5:00 AM walk. The sun obeyed; it knows better!

 

[Snagglefoot]

They are headed behind the moon right now!

 

[Owen Lucas]

They are headed behind the moon right now!

Is it actually dark, like pitch black? Or is there any possibility of taking a picture?

 

[Snagglefoot]

Communications is dead. 40 minutes to go.

 

[Snagglefoot]

Is it actually dark, like pitch black? Or is there any possibility of taking a picture?

Yes, lots of light. Just not visible from from earth.

 

[Snagglefoot]

One point they make is that some meteors that made the the craters on the back side of the moon might have hit the earth if the moon didn’t happen to be in that position when it happened.