Space General Space News, Image and Discussion Thread

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<deleted content>

Thank you very much for the detailed explanation. So her main function is controlled return and orbital manoeuvring missions, I assume?
 

Bacle

When the effort is no longer profitable...
Founder
<deleted content>
Interesting, had not realized that Musk had decided to mess around in the radio astronomy bands; that's not going to make him any friends, in any country.
 

Urabrask Revealed

Let them go.
Founder
About cleaning up the orbit of space trash, have people considered a giant thick wall which causes the debris to embed itself into it?
 
D

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Guest
So, you’re telling us <deleted content> that someone is proposing Planetes in real life.
 
D

Deleted member

Guest
D

Deleted member

Guest
<deleted content> That remains almost a stereotypical recipe for disaster in an American government program.
 
D

Deleted member

Guest
<deleted content>

I know this gets into pure commentary and wishful thinking, but what in your opinion would be the best way to make lemonade in the situation?
 

Bacle

When the effort is no longer profitable...
Founder
So, you’re telling us <deleted content> that someone is proposing Planetes in real life.
<deleted content>
Planetes is an older anime, mid 2000s I think, that is about a crew of space garbage disposal workers and what they have to do to keep space usuable and clean. It delves into both the social, economic, and engineering challenges that come from that sort of situation.

Planetes is very well done, got accolades from NASA and other space agencies for it's realism and proper depitction of living in space. If you are a big fan of space tech and fiction, I highly, highly recommend watching it.

Here's Scott Manley's review of it:
 

Captain X

Well-known member
Osaul
The only bad part of Planetes is that the main character is absolutely cringe and insufferable.
 

Captain X

Well-known member
Osaul
If you read my review thread, you'd see it's in my favorites. ;) Ai is still absolutely insufferable and anyone looking to watch this show should be warned about that, though. This show is good in spite of its main character.
 

AndrewJTalon

Well-known member
Founder

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AndrewJTalon

Well-known member
Founder

The first images from a dark-energy-hunting telescope have been revealed, and they're spectacular.
On Oct. 22, 2019, the inaugural images from the German X-ray telescope eROSITA were presented to the public at the Max Planck Institute for Extraterrestrial Physics (MPE) in Bavaria, Germany. These "first light" images are a combination of pictures from all seven of the telescope's Wolter-1 mirror modules, which have been scanning the sky with custom CCD cameras.

This image from eROSITA shows A3391/3395, two interacting galaxy clusters that are 800 million light-years from Earth. This image was created with exposures from all seven of the telescope's mirror modules; the images were taken between Oct. 17 TKTK
(Image credit: T. Reiprich (University of Bonn), M. Ramos-Ceja (MPE), F. Pacaud (University of Bonn), D. Eckert (University of Geneva), J. Sanders (MPE), N. Ota (University of Bonn), E. Bulbul (MPE), V. Ghirardini (MPE), MPE/IKI)
The German space agency (DLR)'s eROSITA telescope, which has been making observations since Oct. 13, has taken combined X-ray images of pieces of the night sky. Those include pictures of the Large Magellanic Cloud (LMC) and A3391/3395, an interacting pair of galaxy clusters located about 800 million light-years from Earth.
Related: X-Ray Universe: Amazing Photos by the Chandra X-Ray Observatory
"These first images from our telescope show the true beauty of the hidden universe," Peter Predehl, principal investigator of eROSITA, said in a statement. "To meet our science goals, we needed enough sensitivity to detect the most-distant clusters of galaxies in the universe over the whole sky and resolve them spatially. These first light images show that we can do exactly that, but we can go a lot further."

The eROSITA X-ray telescope before it launched aboard a Proton rocket on July 13, 2019.
(Image credit: DLR)
Between the telescope's CCD cameras and seven mirror modules, the observatory is extremely sensitive. "The potential for new discoveries is immense. Now we can start reaping the fruits of more than 10 years of work," Predehl added.
A testament to the sensitivity of the instrument, eROSITA was able to capture some interesting details in the LMC, including remnants of the supernova SN 1987A and a number of both foreground stars and distant active galactic nuclei.
The highly sensitive eROSITA telescope will not only help scientists capture detailed images of cosmic objects like stars and diffuse gas, but it could also support the investigation of dark energy, scientists said.

"This is a dream come true. We now know that eROSITA can deliver on its promise and create a map of the whole X-ray sky with unprecedented depth and detail," Andrea Merloni, eROSITA project scientist, said in the same statement.
"The legacy value will be enormous," Meroni added. "Beside the beautiful images like the ones we're showing today, catalogues of millions of exotic celestial objects such as black holes, galaxy clusters, neutron stars, supernovae and active stars will be used by astronomers for years to come."
eROSITA, which launched with a Spektrum-Röntgen-Gamma (Spektr-RG) satellite onboard a Proton rocket on July 13, 2019, from the Baikonur Cosmodrome in Kazakhstan, is part of Spectrum Roentgen Gamma (SRG), a Russian-German collaborative astrophysical-observation mission, which includes the Russian ART-XC telescope.
 
Reaction Engine Ltd.
D

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Guest
Some big news out of that British dinosaur determined to bring us back to the 50s the Good Way -- Of course, I mean Reaction Engine Ltd.:

Link here

Skylon’s SABRE Engine Passes a Big Test
The UK aerospace company Reaction Engine Limited was founded in 1989 for the express purpose of creating engines that would lead to spaceplanes capable of horizontal take-off and landing (HOTOL). With support from the ESA, these efforts have resulted in the Synergetic Air-Breathing Rocket Engine (SABRE). Once complete, this system will combine elements of jet and rocket propulsion to achieve hypersonic speeds (Mach 5 to Mach 25).
Recently, Reaction Engines passed a major milestone with the development of their SABRE engine. As the company announced earlier this week (on Tues. Oct. 22nd), their engineers conducted a successful test of a vital component – the engine’s heat exchange element (aka. precooler). What’s more, the test involved airflow temperatures equivalent to speeds of Mach 5, which is in the hypersonic range.
The precooler heat exchanger is a vital component of the SABRE engine and is responsible for cooling the hot airstream that enters the engine intake at hypersonic speed. This ground-based test took place at Reaction Engines specially-constructed Colorado Air and Space Port, as was part of the HTX test program. This consisted of subjected the precooler to airflow temperatures in excess of 1,000 °C (1,800 °F).

HTX_airlow_pic-1024x414.jpg
The HTX testing apparatus at the company headquarters in Colorado Air and Space Port. Credit: Reaction Engines Ltd.
The precooler managed to quench the extreme heat of the incoming airflow in less than 1/20th of a second. This effectively demonstrated the precooler’s ability to cool airflow at speeds that are well beyond the limit of what conventional jet-engines can tolerate. It also built upon the previous successful HTX test conducted in April, which saw the precooler operate ate temperatures of 420 °C (788 °F) – the equivalent of Mach 3.3.
This effectively demonstrates that a key engine component can handle the kinds of speed that it will need to reach altitudes of 25,000 meters (82,000 ft). At this point, it will engage the rocket element of its engine to achieve a speed of Mach 2, which will propel it to suborbital altitudes. As Mark Thomas, Chief Executive, Reaction Engines, said in a recent company press release:
“This is a major moment in the development of a breakthrough aerospace technology which has seen Reaction Engines’ precooler tested at Mach 5 airflow temperature conditions, smashing through previous achievements at Mach 3.3 temperatures and paving the way for hypersonic flight. In addition to its use in our SABRE class of air breathing rocket engines, there are numerous exciting commercial applications for our precooler technology, which delivers world-leading heat transfer capabilities at low weight and compact size, and we are seeing significant interest from a range of potential customers and technology partners.”

This latest test is a significant milestone towards enabling a system that has the power to revolutionize high-speed air travel and provide greater access to space. These efforts have been supported by the UK Space Agency (UKSA) and the European Space Agency (ESA) in Europe, and under contract in the US by the Defense Advanced Research Projects Agency (DARPA).
The SABRE (Synergistic Air-Breathing Rocket Engine) could revolutionize access to space. Image: Reaction Engines
The SABRE (Synergistic Air-Breathing Rocket Engine) could revolutionize access to space. Credit: Reaction Engines
So far, the ESA has invested €10 million ($11 million) in SABRE development via the UKSA, which also invested £50 million ($64 million) on its own. The ESA also provides technical oversight for the project on behalf of the UKSA, which included a review and validation of the preliminary design of the demonstrator engine core of the SABRE back in March.
In the near future, Reaction Engines will be conducting ground-based testing of this component at its TF1 test facility in Westcott, which is currently under construction. As Richard Varvill, the co-founder and current Chief Technology Officer of Reaction Engines, indicated:

“This is a momentous landmark for Reaction Engines in the development of its SABRE engine, which has the potential to revolutionize both access to space and high-speed flight by powering aircraft to five times the speed of sound. The performance of our proprietary precooler technology was validated at hypersonic flight conditions and takes us closer to realizing our objective of developing the first air-breathing engine capable of accelerating from zero to Mach 5.”
As Varvill added, this milestone is the culmination of 30 years of engineering work that began when he and fellow propulsion engineers Alan Bond and John Scott-Scott founded the company. “This is a momentous landmark for Reaction Engines in the development of its SABRE engine,” he said, “which has the potential to revolutionize both access to space and high-speed flight by powering aircraft to five times the speed of sound.”
Test_facility_pillars-1024x768.jpg
Reaction Engines Colorado Air and Space Port test facility. Credit: ESA
In the meantime, Reaction Engines’ will continue testing the elements of its engine while also pursuing commercial opportunities. The patented heat exchanger technology could be used to greatly enhance the performance of existing jet engines and has a wide range of other applications – such as automotive, aerospace, energy and industrial processes.

But in the end, the greatest potential arguably lies within the realm of space exploration. Along with developments like reusable and single-stage-to-orbit rockets, HOTOL spaceplane concepts have the potential to dramatically cut costs and increase access to space. Commenting on this achievement, UK Science Minister Chris Skidmore said:
“The SABRE engine is one of the UK’s most exciting engineering projects which could change forever how we launch satellites into orbit and travel across the world. It’s fantastic to see Reaction Engines passing this significant milestone, which demonstrates how its pre-cooler technology can deal with the extreme temperatures associated with traveling at five times the speed of sound.”
 

gral

Well-known member
<deleted content>

That almost earns them forgiveness for changing the name of the building. Don't know why, but I liked the sound of SMARF. "The Vulcan unit is currently being SMARFed..."
 

gral

Well-known member
One of the replies to that tweet say it's 1-2 m big. Not surprising people missed it.
 

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