SpaceX and other space stuff

[fig]

29 Aug 2022, 8 days away, is launch date for NASA's Artemis 1, which will be the Orion spacecraft and the Space Launch System (SLS) rocket. Orion capsule won't be manned, this flight is for testing purposes. But what a 'test' it's gonna be!

From the press kit:

• Launch site: Launch Pad 39B at NASA’s Kennedy Space Center in Florida
• Launch date: Aug. 29, 2022
• Launch window: 8:33 a.m. EDT to 10:33 a.m.
• Mission Duration: 42 days, 3 hours, 20 minutes
• Destination: distant retrograde orbit around the Moon
• Total mission miles: approximately 1.3 million miles (2.1 million kilometers)
• Targeted splashdown site: Pacific Ocean, off the coast of San Diego
• Return speed: Up to 25,000 mph (40,000 kph)
• Splashdown: Oct. 10, 2022

Here's the press kit, stuffed with plain text language details, descriptions, etc. Gotta say, I'm a bit excited about this one. An early, but major, step returning to the Moon and beyond..
NASA Artemis I Press Kit

 

[ahc]

Gotta say, I'm a bit excited about this one. An early, but major, step returning to the Moon and beyond..
NASA Artemis I Press Kit

Me too! It's the first big step to having a continual human presence on and around (with the proposed lunar space station) the moon.

 

[StereoPlayer]

Something Amazing Photobombed NASA’s New Pic of Jupiter

 

[Winslow]

Something Amazing Photobombed NASA’s New Pic of Jupiter
View attachment 4789727

 

[StereoPlayer]

Weird/wild stuff…
NASA Recorded The Sound From a Black Hole, and It's Super Eerie

 

[Winslow]

Weird/wild stuff…
NASA Recorded The Sound From a Black Hole, and It's Super Eerie

In space, no one can hear you scream...

 

[ahc]

In space, no one can hear you scream...

View attachment 4790401

In space where John Cage's "4:33" is on continual repeat.

 

[fig]

Weird/wild stuff…
NASA Recorded The Sound From a Black Hole, and It's Super Eerie

And my mind is blown for the rest of the night LOL...

The lowest note, the one identified back in 2003, is a B-flat, just over 57 octaves below middle C; at that pitch, its frequency is 10 million years. The lowest note detectable by humans has a frequency of one-twentieth of a second.

...so that we can hear the sounds in all directions from the supermassive black hole at pitches 144 quadrillion and 288 quadrillion times higher than their original frequency.

So, the diameter of an open B-flat string would be? Anyone?? I'm thinkin' maybe the diameter of our solar system, but I got no numbers to back that up...

 

[StereoPlayer]

And my mind is blown for the rest of the night LOL...

The lowest note, the one identified back in 2003, is a B-flat, just over 57 octaves below middle C; at that pitch, its frequency is 10 million years. The lowest note detectable by humans has a frequency of one-twentieth of a second.

...so that we can hear the sounds in all directions from the supermassive black hole at pitches 144 quadrillion and 288 quadrillion times higher than their original frequency.

So, the diameter of an open B-flat string would be? Anyone?? I'm thinkin' maybe the diameter of our solar system, but I got no numbers to back that up...

Deep… incredible though!

 

[bholder]

And my mind is blown for the rest of the night LOL...

The lowest note, the one identified back in 2003, is a B-flat, just over 57 octaves below middle C; at that pitch, its frequency is 10 million years. The lowest note detectable by humans has a frequency of one-twentieth of a second.

...so that we can hear the sounds in all directions from the supermassive black hole at pitches 144 quadrillion and 288 quadrillion times higher than their original frequency.

So, the diameter of an open B-flat string would be? Anyone?? I'm thinkin' maybe the diameter of our solar system, but I got no numbers to back that up...

I think a normal .135 would do (though that's in light-years lol).

 

[Volker Kirstein]

 

[Jon Clegg]

I think a normal .135 would do (though that's in light-years lol).

But you have to use a cab with 15's to reproduce it (though that's in light years too)

 

[bholder]

Get to the choppa!

NASA's Ingenuity helicopter makes 30th Martian flight

Still flyin'!

 

[ahc]

Artemis 1 launch Monday morning 8:33 AM EDT.

Back to the moon: How to watch NASA's Artemis I mission launch

 

[ahc]

The DART mission. September 26th.

How to watch NASA spacecraft crash into asteroid at 15,000 mph

 

[ahc]

SpaceX Starlink mission tonight at 10:15 PM EDT

 

[fig]

7:04am. Watching propellant loading of NASA's Space Launch System (SLS).

Engineers studying two possible issues. One of the 4 main engines isn't quite reaching it's pre-conditioning temperature. The other issue is a possible crack in a cryogenic fuel storage tank as evidenced by a line of frost on the outer insulation layer.

Propellant loading is continuing while they look at the issues.

NASA livestream. There is audio, but rather quiet at the moment.

 

[fig]

7:40am. The possible crack in the cryo tank is determined to be a crack in the insulating foam only, not in the actual tank. Since humid air can now, thru the crack, touch the cold tank, condensation freezes along the crack. This also used to happen during the Space Shuttle age.

Still working on engine preconditioning temp issue.

 

[fig]

7:53am. I've been lurking in the NASA Spaceflight forum. Rumor is management is leaning towards scrubbing the test. No official word yet.

 

[Winslow]

Annnnnnnd scrubbed. No flying pork today.