The thread for space cadets!

I understand the aim here, but I do find it funny how the phrase would be used around my friends.

"He's a right space cadet" is not an accolade!
The first time I ever heard the insult/endearment "space cadet" was in Supergirl (the 1984 movie), so I've always assumed that it originated in the USA — and it's clearly been in general use for at least 40 years, and possibly longer (strikes me as being a bit Valley-Girlish, like, fershure, y'know?).

And @hobbsyoyo is American and (now) lives in California, so was likely well aware of the idiomatic meaning when he started the thread.

I miss hobbs.
 
Oh yes, its more about being silly, than anything mean. A bit of a dreamer perhaps.
In my friend group it means someone who is into recreational pharmaceuticals.
 
:(
Man who blasted to space alongside Star Trek star dies in plane crash
Glen M. de Vries among 2 killed in Thursday crash in northern New Jersey


A man who travelled to space with Star Trek actor William Shatner last month was killed along with another person when the small plane they were in crashed in a wooded area of northern New Jersey, according to state police.
https://www.cbc.ca/news/world/glen-de-vries-fatal-plane-crash-new-jersey-1.6247375
 
An Almost Total Lunar Eclipse, not visible here but perhaps for you?

The best viewing will be right around the peak of the eclipse, on November 19th at 9:03 UTC/4:03 AM EDT/1:03 AM PDT. This part of the eclipse is visible in all of North America, as well as large parts of South America, Polynesia, eastern Australia, and northeastern Asia.​

Almost-Total-Lunar-Eclipse-November-2021-World-Map-777x437.jpg

A world map showing where the eclipse is visible at the time of greatest eclipse. Earlier parts of the eclipse are visible farther east, while later times are visible farther west.
 
Spinning into suborbit

SpinLaunch conducts first test flight at New Mexico’s Spaceport America

Copyright © 2021 Albuquerque Journal
BY KEVIN ROBINSON-AVILA
JOURNAL STAFF WRITER

SpinLaunch Inc. launched its first rocket in October from Spaceport America in southern New Mexico with a newly built mass accelerator that literally flings vehicles into suborbit. The company announced the launch Monday, although the test flight actually occurred Oct. 22. It marks a turning point for SpinLaunch, a Californiabased company that formed in 2014. “Seven years ago we founded the company and for the last three years it’s been all about designing and developing of our test site in New Mexico,” SpinLaunch founder and CEO Jonathan Yaney said. “To get to this point where we’re fully proving our system through a first demonstration flight is an exciting moment.”

The company created a novel centrifuge system that rapidly spins a rocket around on the ground until reaching hypersonic speeds. It then releases the vehicle like a catapult to hurl it to the edge of space. It’s invested more than $40 million to date to set up its spaceport test center, including a 10,000-square-foot operations facility, plus the centrifuge itself. The centrifuge stands like a Ferris wheel, towering 165 feet above the desert floor. The spinning action occurs inside the vacuum-sealed structure, and the rocket shoots out through a tubular arm after hitting the right speed. The spaceport-based centrifuge was designed vertically to launch vehicles straight up and down to test components, aerodynamics and other technology. But future commercial systems will lie horizontally, with a diameter three times larger than the spaceport test system.



ajax-request.php
zoom_in.png

SpinLaunch’s centrifugal system spins around inside until reaching hypersonic speeds to then shoot a rocket out of an attached tubular arm. This test centrifuge at Spaceport America is only one-third the diameter of the full launch system, which will lie flat on the ground for commercial operations in the future. COURTESY OF SPACEPORT AMERICA


“Our future orbital systems will launch rockets on a sideways trajectory, not straight up,” Yaney said. “They’ll rest at an angle to the horizon.” The first launch now kicks off an aggressive testing period, with about 30 test flights expected over the next six-toeight months.
“This is a highly unique launch system that the world’s never seen before,” Yaney said. “We’ve designed each individual component over years, and we’ve now put it all together to work in concert with one another. This first flight was a moment of validation, and it worked magnificently, proving the technology’s viability.”

SpinLaunch is headquartered in Long Beach, Calif., where it operates a 140,000-square-foot test and manufacturing facility. To date, it’s raised about $100 million in venture investment. It currently has about 60 full-time employees in New Mexico. It’s one of five companies now permanently located at the spaceport. That includes Virgin Galactic, the space tourism company that sent Sir Richard Branson to suborbit this summer.

About a half dozen other companies also regularly conduct operations at the $220 million facility, which was built by the state. “There’s growing awareness in the aerospace industry that companies can come to New Mexico to start and grow a business here,” said spaceport Executive Director Scott McLaughlin. “A few years ago, people were saying investment in the spaceport was a waste of money. But there’s bustling activity here now, with companies like SpinLaunch and Virgin Galactic reaching major, trail-blazing achievements this year.”
 
Ballista missiles!

:(
Man who blasted to space alongside Star Trek star dies in plane crash
Glen M. de Vries among 2 killed in Thursday crash in northern New Jersey


A man who travelled to space with Star Trek actor William Shatner last month was killed along with another person when the small plane they were in crashed in a wooded area of northern New Jersey, according to state police.
https://www.cbc.ca/news/world/glen-de-vries-fatal-plane-crash-new-jersey-1.6247375
He was a Blue-Shirt, too :(
 
i posted a link in the science news thread but should be here

this Thursday/Friday night-morning the longest eclipse in centuries
I glanced at the moon soon after 6am this morning, and knowing that is was supposed to be entering the penumbra I could imagine it was a bit browner than usual, but I am not convinced. Then it set. I hope someone gets a better view.
 
So I got the wrong day :blush:

A private space based kaleidoscope to find planets around Alpha Centauri

A proposed space telescope will use an innovative lens to search for habitable exoplanets in the Solar System’s nearest neighbour, Alpha Centauri. The project is a collaboration between scientists from Australia’s Sydney Institute for Astronomy and Saber Astronautics and NASA’s Jet Propulsion Laboratory, and is backed by tech billionaire Yuri Milner’s alien-hunting Breakthrough Initiatives programme.

The telescope will be named TOLIMAN, which is an Arabic-derived alternative name for Alpha Centauri. Or, in an admirable backronym, ‘Telescope for Orbit Locus Interferometric Monitoring of our Astronomical Neighbourhood’. All being well, it will be “an agile low-cost mission that delivers results by about the middle of the decade”, says astrophysical imaging physicist Peter Tuthill.

The TOLIMAN telescope will use a diffractive pupil lens that spreads starlight into a flower-like pattern, making it easier for astronomers to detect perturbations that indicate orbiting planets.
d41586-021-03489-0_19879926.jpg
 
Dart: Mission to smack Dimorphos asteroid set for launch
A spacecraft is set to launch and test technology that may one day be needed to tip a dangerous asteroid off course.

Nasa's Dart mission will evaluate a longstanding proposal for neutralising a sizeable space rock headed for Earth.

The spacecraft will crash into an object called Dimorphos to see how much its speed and path can be altered.

If a chunk of cosmic debris measuring a few hundred metres across were to collide with our planet, it could unleash continent-wide devastation.

It's the first attempt to deflect an asteroid for the purpose of learning how to protect Earth, though this particular asteroid presents no threat.

"Dart will only be changing the period of the orbit of Dimorphos by a tiny amount. And really that's all that's needed in the event that an asteroid is discovered well ahead of time," said Kelly Fast, from Nasa's planetary defense coordination office,

https://www.bbc.com/news/science-environment-59327293
 
Dart: Mission to smack Dimorphos asteroid set for launch
A spacecraft is set to launch and test technology that may one day be needed to tip a dangerous asteroid off course.

Nasa's Dart mission will evaluate a longstanding proposal for neutralising a sizeable space rock headed for Earth.

The spacecraft will crash into an object called Dimorphos to see how much its speed and path can be altered.

If a chunk of cosmic debris measuring a few hundred metres across were to collide with our planet, it could unleash continent-wide devastation.

It's the first attempt to deflect an asteroid for the purpose of learning how to protect Earth, though this particular asteroid presents no threat.

"Dart will only be changing the period of the orbit of Dimorphos by a tiny amount. And really that's all that's needed in the event that an asteroid is discovered well ahead of time," said Kelly Fast, from Nasa's planetary defense coordination office,

https://www.bbc.com/news/science-environment-59327293
This is kind of cool, but my guess from this image is that "a tiny amount" means really tiny. Has anyone calculated how ar away that much delta V would have to be applied to a damaging asteroid for it to miss earth?

d41586-021-03471-w_19880068.png
 
Well, I guess from this experiment, we will have practical science to calculate such efforts if they are needed?

I'm pretty confident of humanities maths and science, so I am sure we could do it if need be.. but understanding the mass/volume etc of a spinning, uneven object, zillions of miles away will always be a bit of a clusterfudge.

I consider "blasting it to smithereens" might be a more practical approach.. and then obliterate the bits that are formed after. But then again, there are reasons I am not in charge!
 
Last edited:
Not to worry we have whole surveys dedicated to spotting rocks that may threaten us. Problem is the smaller they get the less likely you are to spot them. The later you spot them the more destructive you'll need to be to stop them falling on our heads.
 
'Incident' delays launch of James Webb Space Telescope
The launch of the James Webb Space Telescope has been put back by at least four days to allow for more checks.

It was to have been sent into orbit on 18 December and will now go up no earlier than the 22nd of the month.
A US space agency statement said an "incident" had occurred during launch preparations that may have
caused a sudden vibration in the observatory.

https://www.bbc.com/news/science-environment-59388109
 
Well, I guess from this experiment, we will have practical science to calculate such efforts if they are needed?

I'm pretty confident of humanities maths and science, so I am sure we could do it if need be.. but understanding the mass/volume etc of a spinning, uneven object, zillions of miles away will always be a bit of a cluster****.

I consider "blasting it to smithereens" might be a more practical approach.. and then obliterate the bits that are formed after. But then again, there are reasons I am not in charge!

Anything that can be a danger to the Earth, or our biosphere, or our technological civilization, can't be blasted to smithereens, not with our tech.

Nuclear detonations from a distance away, while the rock is far off, may be enough to angle it away/change its course. Or sending probes to latch on and use ISRU to fuel rockets to push it away, or parasite-mass driver drones that chuck pieces of it and alter it that way. But all of those require time.
 
What happens when stars get too close to a black hole

In a series of simulations, a team of astrophysicists has chucked a bunch of stars at a range of black holes, and recorded what happens.

When a star ventures a little too close to a black hole, things turn violent pretty quickly. The extreme gravitational field of the black hole starts deforming and then pulling the star apart, due to what we call tidal forces – the stretching of one body due to the gravitational pull of another.​

 
Back
Top Bottom