Tag: engineering

Stratolaunch’s Roc airplane completes 2nd captive-carry test flight

3:48 pm

Stratolaunch’s giant Roc airplane, the largest in existence, successfully completed its second captive-carry test flight, carrying a Talon-A (TA-0) hypersonic test vehicle under its central fuselage during take-off and landing.

The flight set a new duration record lasting a total of six hours and reached a maximum altitude of 22,500 ft., representing another important step forward in the company’s near-term goal of completing separation testing with TA-0. Primary test objectives included flight outside of the local Mojave area for the first time and evaluation of the separation environment. Roc and TA-0’s onboard data systems provide critical information on the aerodynamic loads and moments prior to release of TA-0, helping to ensure safe separation of the vehicle from Roc. The flight team also practiced chase formation and communication sequencing for the upcoming separation test.

The company has a contract with the Air Force to use the operational Talon-1 spacecraft, released from Roc, to do hypersonic test flights, hopefully in the first half of 2023.

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Sweden cuts ribbon on Esrange spaceport

3:42 pm

Sweden yesterday officially inaugurated a new commercial launch site at the Esrange spaceport that the ESA had used previously for suborbital tests.

The site is an extension of the Esrange Space Centre in Sweden’s Arctic, around 40 kilometres (25 miles) from the town of Kiruna. Around 15 million euros ($16.3 million) have been invested in the site, which is expected to serve as a complement to Europe’s space hub at Kourou in French Guiana. It will also provide launch capabilities at a time when cooperation with Russia and the Baikonur launch site in Kazakhstan has been curtailed by the war in Ukraine.

Esrange’s state-owned operator, the Swedish Space Corporation (SSC), aims to launch its first satellite from the site “in the first quarter of 2024”, a spokesman told AFP on Friday.

At this moment, there are three commercial rocket spaceports racing to complete the first orbital launch from Europe. Esrange in Sweden and the two UK spaceports, Spaceport Sutherland in Scotland and SaxaVord in the Shetland Islands. Cornwall in the UK is an airport, so it can only launch rockets that use an airplane, which essentially limits its launch customers to Virgin Orbit.

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Touring the largest organ in the world

6:01 pm

An evening pause: Specifically, this tour takes us from the bottom to the top of the largest pipe, and then shows us what comes out when you play it.

Hat tip Judd Clark, who provides this additional information:

Constructed between May 1929 and December 1932, the Main Auditorium Organ is the “Poseidon”, built by the Midmer-Losh Organ Company, and is the world’s largest pipe organ. Also included in this organ are pipes operating on 100 inches of pressure, the Grand Ophicleide being the loudest and also most famous. The instrument has an estimated 33,113 pipes and requires approximately 600 horsepower (450 kW) of blowers to operate.

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Chinese company based in Hong Kong signs deal to build spaceport in Djibouti, Africa

2:57 pm

Djibouti's location in Africa
Djibouti’s location is indicated in black.

The government of Djibouti, one of the smallest nations in Africa and located at the southern end of the Red Sea, has signed an agreement with a pseudo Chinese company, the Hong Kong Aerospace Technology Group, to build a major spaceport there.

According to the translated press release, the five year project will cost one billion dollars, include a lease for 30 years, and involve the construction of a port, highway, and electrical power distribution system.

As much as Hong Kong for more than two centuries has been a haven for private enterprise, it is now under the control of the communist Chinese, and they would not allow anyone from Hong Kong to make such a deal unless they were in full control.

Based on the map, there is almost no launch path out of Djibouti that will not cross another nation’s territory. Unless the Chinese plan to make all the first stages launched from this site reusable, they are going to dropping stages on a lot of people’s heads, without their permission. And they will be doing it to some places where war is often and continues to be the most frequently used negotiating tactic.

Hat tip to stringer Jay.

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Searching for surface changes caused by the biggest recorded Martian quake

1:27 pm

Location of May quake
The white patches mark the locations on Mars of the largest quakes detected by InSight

On May 4, 2022, the seismometer on the InSight Mars lander detected a 4.7 magnitude earthquake on Mars, the largest ever detected.

The map to the right shows the approximate location of that quake by the white patch with the green dot. (You can read the paper describing this quake here [pdf].) This is also the same approximate location of a small five-mile-wide crater known to have many slope streaks on its interior walls.

Slope streaks are a uniquely Martian geological feature whose origin remains unknown. They resemble dark avalanche streaks flowing downhill, but make no changes in the topography, and lighten with time. They also occur randomly throughout the year. Two slightly different theories for their formation suggest that the streaks are triggered by the fall of dust particles, though neither is proven or even favored.

If either of these theories are true, then the 4.7 magnitude earthquake at this location should have caused the formation of more streaks. To find out, scientists have used the high resolution camera on Mars Reconnaissance Orbiter (MRO) to compare that crater both before and after the quake to see if any new streaks has appeared. Below is a side-by-side comparison of these images.
» Read more

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FCC votes to create its own space bureaucracy, despite lacking statutory authority

9:55 am

On January 9, 2023 the commissioners of the Federal Communications Commission FCC voted [pdf] to create its own space bureaucracy designed to regulate the lifespan of new satellites, despite lacking legal authority to do so.

As noted almost as an aside by this news article,

In order for the planned changes to go into effect, the FCC will first have to obtain congressional approval for the reorganization and place a notice in the Federal Register.

This vote pushed forward the plan announced in November that attempts to expand the regulatory power of the FCC beyond its legal authority. Expect Congress to push back somewhat, but right now most power in Washington is held by unelected bureaucracies like the FCC, not the elected legislators as defined by the Constitution. The FCC will continue to push hard, and mostly win in this power game. Congress right now is too divided and weak to fight back.

The result will be new regulations on satellite construction made by non-engineers and paper-pushers in the FCC, not engineers and managers in the companies actually building the satellites.

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Construction of the Thirty Meter Telescope in Hawaii remains in limbo

9:33 am

Despite the successful power grab by protesters that stopped construction and took management of the telescopes on Mauna Kea in Hawaii away from the University of Hawaii and gave it to a newly created board made up of “observatory representatives, Native Hawaiian cultural practitioners, local business and education officials, and experts in land management,” construction of the Thirty Meter Telescope (TMT) in Hawaii remains in limbo.

But there is another actor in this drama: the National Science Foundation (NSF). TMT has accrued substantial financial backing from its university backers and the governments of China, Japan, India, and Canada, but it is still far from fully funded and has asked NSF to fill the gap. TMT’s request has come in partnership with the Giant Magellan Telescope (GMT), another U.S.-led effort to build a massive new telescope. GMT’s site is already being prepared in Chile but it is also in financial straits.

Together, the two projects are seeking $3 billion from NSF in exchange for the wider U.S. astronomical community gaining access to a large slice of both scopes’ observing time. That proposal was judged by U.S. astronomers as their top priority for ground-based astronomy in the community’s decadal survey published in November 2021. NSF is now assessing whether this is a good investment for U.S. taxpayers.

Considering that Congress now believes that money grows on trees, and there is no reason not to fund anything anyone wants no matter how much debt it produces, I expect that the NSF will eventually fund both telescopes. There is however the slim possibility that the NSF will look at the new and very complex managerial make-up now running things in Hawaii and decide it is impractical and guaranteed to produce problems. The goals of the different members of this board are so contradictory that any construction on Mauna Kea will likely have to be renegotiated over and over again, causing further delays.

Of course, endless funding and delays could be considered a feature, not a bug, by our present corrupt federal government. In that case the NSF will celebrate these delays.

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Lunar Flashlight cubesat in trouble

9:18 am

The mission of NASA’s test cubesat Lunar Flashlight is now threatened because of a problem with its experimental thrusters that use what the agency labels a new “green” propellant.

The spacecraft, called Lunar Flashlight, launched last month on a mission to seek out water ice on the moon. The probe was also expected to test a new “green” propellant during its four-month voyage to the moon, but its thrusters have a problem, NASA said on Thursday (Jan. 12). “While the smallsat is largely healthy and communicating with NASA’s Deep Space Network, the mission operations team has discovered that three of its four thrusters are underperforming,” NASA wrote in an update. “Based on ground testing, the team thinks that the underperformance might be caused by obstructions in the fuel lines that may be limiting the propellant flow to the thrusters.”

Engineers are now devising a plan to fire the thrusters longer and more frequently to make up for the lower thrust. If successful, the cubesat will enter its planned lunar orbit in about four months, where it will use infrared lasers to search for ice in the permanently shadowed craters at the lunar poles while testing a variety of other new technologies.

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China completes two launches today

9:07 am

China today continued its normal fast pace of winter launches, launching twice from two different spaceports.

First, a Long March 2C rocket launched a communications satellite from the Xichang Satellite Launch Center in southwest Sichuan Province. Then, a Long March 2D rocket launched three classified technology test satellites from the Jiuquan Satellite Launch Center in northwest China.

As I noted in yesterday’s quick space links, the drop zones for both were in China. No word as yet on whether anything fell near habitable area.

At present the 2023 launch race consists entirely of China with four launches, and SpaceX with two.

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Racing above the clouds of Jupiter

11:28 am

Racing above the clouds of Jupiter
Click for full image.

Cool image time! The photo above, reduced in size to post here, was created from a raw Juno image by citizen scientist Kevin Gill. From his caption:

A low perspective over Jupiter’s North Polar Storms. Used imagery from the Juno spacecraft’s recent Perijove 47 to render a simulated view as if the viewer were only a few thousand kilometers above the clouds. Applied simulated altimetry, shadowing, and upper atmospheric transparency depth in Blender and Photoshop to render this.

To get some perspective on how large Jupiter is, the planet’s curve is about comparable to the same curve seen by astronauts of the Earth at a height of about 300 to 400 kilometers. In this image however we are about ten times higher.

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First exoplanet confirmed by Webb

10:23 am

Astronomers have used for the first time the Webb Space Telescope to confirm the existence of an exoplanet, previous noted in data from the orbiting TESS telescope.

Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter. The research team is led by Kevin Stevenson and Jacob Lustig-Yaeger, both of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland.

The team chose to observe this target with Webb after carefully reviewing targets of interest from NASA’s Transiting Exoplanet Survey Satellite (TESS), which hinted at the planet’s existence. Webb’s Near-Infrared Spectrograph (NIRSpec) captured the planet easily and clearly with only two transit observations.

The data is still preliminary, so more analysis is necessary to provide some information about the planet’s atmosphere.

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German rocket startup signs deal with UK spaceport

10:17 am

Rocket Factory Augsburg (RFA), a German rocket startup, has signed a deal with the SaxaVord spaceport in the Shetland Islands of Scotland to fly its first launch from there later this year.

Rocket Factory Augsburg (RFA) has signed a multi-year deal with the SaxaVord spaceport, being built in Unst, for the first launch of its satellite-carrying rockets. After testing at the site in mid-2023, it hopes to launch to a 500km orbit by the end of the year.

Because of the failure of the Virgin Orbit launch from Cornwall earlier this week, the honor of being the first orbital launch from within the United Kingdom remains ungrabbed. Both SaxaVord and Spaceport Sutherland, also in Scotland but at a different location, are now competing for that honor. Both now have planned launches this year, assuming the Civil Aviation Authority of the UK can issue a permit in less than fifteen months.

Meanwhile, Rocket Factory is competing with two other German startups for the honor of being the first commercial private European rocket company to reach orbit.

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China is planning 60-plus launches in 2023

10:08 am

According to an article today in China’s state-run press, China is planning 60-plus launches in 2023, matching approximately its launch rate in 2022.

The China Aerospace Science and Technology Corporation (CASC) is expected to have more than 50 launches, and other Chinese space enterprises will have more than 10 launches.

If this number is accurate, it suggests a slowdown in activity by the many pseudo-companies that the Chinese government has allowed to form to compete for government and commercial business. Two years ago it appeared that these companies were launching at a faster rate, even many of those launches were failures.

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American camera snaps picture of shadowed floor of Shackleton crater

10:03 am

floor of Shackleton Crater
Click for original image.

Using ShadowCam, a NASA-funded camera designed to take high resolution images of the permanently shadowed regions on the Moon, scientists have snapped the first picture of shadowed floor of Shackleton crater.

That image, reduced to post here, is to the right. I have added some labels to clarify what we are seeing. The arrow points to a boulder track caused when the boulder rolled down the crater rim slope.

The camera will be used to image the moon’s permanently shadowed regions with a resolution of better than 6.6 feet (2 meters) per pixel

ShadowCam is one of six instruments on the South Korean lunar orbiter, Danuri, which is now in lunar orbit and beginning its science phase. This was therefore only a successful test image to make sure the camera was working as planned.

Though the area photographed was in shadow (otherwise it would have saturated ShadowCam’s sensitive camera), this first image appears to show no ice at the base of the crater. This simply could be that this part of the crater floor is not permanently shadowed, but gets illuminated enough to melt off any ice. Or it could be that no ice exists in these places. We need to wait and see.

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Russia and Europe negotiating return of rockets and satellites

9:44 am

Russia and Europe have begun negotiations concerning the return of the various rockets and satellites that were left stranded in both countries when Russia invaded the Ukraine and all cooperative international agreements between the two entities broke off.

[I]n January 2023, an industry source told RussianSpaceWeb.com that Arianespace representatives were exploring a potential deal with Roskosmos on the exchange of Soyuz rocket components stranded in French Guiana for a group of 36 OneWeb satellites stuck in Baikonur Cosmodrome in Kazakhstan after the aborted 14th launch for the Internet constellation. The satellites were held at the Russian-controlled facility in Kazakhstan per the order by Rogozin, but the newly appointed head of the Roskosmos State Corporation Yuri Borisov was reportedly opened to negotiations on their fate.

There are many obstacles blocking this deal, the biggest being the on going war itself. It will be necessary to engineers to both places to facilitate the return, and the war right now makes that difficult if not impossible.

Ironically, Russia is likely in more need of this deal than Europe. OneWeb of course wants its satellites back, but it can replace them. Russia it appears is having trouble building complex things like rockets, and needs these rockets and components to replace components it no longer can get in the west.

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Astronomers discover more than 800 new supermassive black holes

3:54 pm

Using archival data from both the orbiting Chandra X-Ray telescope and the ground-based Sloan Digital Sky Survey telescope (SDSS), astronomers have discovered more than 800 new supermassive black holes hidden in the center of galaxies.

By systematically combing through the deep Chandra Source Catalog and comparing to SDSS optical data, the researchers identified 817 XBONG candidates, more than ten times the number known before Chandra was in operation. Chandra’s sharp images, matching the quality of those from SDSS, and the large amount of data in the Chandra Source Catalog made it possible to detect this many XBONG candidates. Further study revealed that about half of these XBONGs represent a population of previously hidden black holes.

The key to this discovery is the use of telescopes observing in different wavelengths, X-rays with Chandra and optical with SDSS. Combined the data showed evidence of the hidden supermassive black holes.

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January 11, 2023 Quick space links

3:29 pm

Courtesy of BtB’s stringer Jay.

 

 

 

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A collapse on Mars

1:34 pm

A collapse on Mars
Click for full image.

The photo to the right, cropped, reduced, and enhanced to post here, was taken on October 27, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The full photo was simply labeled as a “collapse feature”, and because it contained a few other sinks to the north beyond the top edge of this cropped picture, it is unclear if the scientists were referring to this sink in particular.

This sink is the most interesting however, because it really looks like something had sucked material out from below, causing the surface crust to fall downward, intact except for some cracks along the perimeter of the collapse.

The overview map below as always provides some context that might explain what we are seeing.
» Read more

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A new hotspot map of Io, based on Juno data

11:52 am

Hot spot map of Io
Click for original figure.

Scientists have compiled a new map of the many volcanic hotspots on the Jupiter moon Io, based on data obtained by Juno, including 23 spots previously undetected. From the paper’s abstract:

We mapped the hot spot distribution on Io’s surface by analyzing the images acquired by the JIRAM instrument onboard the Juno spacecraft. We identified 242 hot spots, including 23 not present in other catalogs. A large number of the new hot spots identified are in the polar regions, specifically in the northern hemisphere. The comparison between our work and the most recent and updated catalog reveals that JIRAM detected 82% of the most powerful hot spots previously identified and half of the intermediate-power hot spots, thus showing that these are still active. JIRAM detected 16 out of the 34 faint hot spots previously reported.

The map above is taken from figure 2 of the paper. The data, when compared to other earlier data, confirms that many of these hot spots are long-lived, and have been erupting now for decades.

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Ingenuity about to fly up onto the delta

10:21 am

Overview map
Click for interactive map.

The engineering team that operates the helicopter Ingenuity on Mars announced today that the next flight, #39, will go about 456 feet and travel to the northeast.

The green dot on the map to the right shows Ingenuity’s present location. The yellow lines indicate the territory within which this flight will head. If successful it will be the first time the helicopter has left the floor of Jezero Crater, and moved uphill onto the delta that flowed into that crater sometime in the far past.

The blue dot marks Perseverance’s present location. The dotted red line indicates its eventual planned route on that delta.

The engineers state that their flight goal is to “flight test new software”. This new software is supposed to allow Ingenuity to fly over rougher terrain. On the 38th flight, it proved its worth by not only flying over an area of rippled sand dunes, it landed between two.

This next flight, scheduled for sometime today, will be even more challenging, because the helicopter will have to fly upward above higher terrain.

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TESS finds a second Earthsize planet orbiting in the habitable zone of a star

9:37 am

TESS solar system

The orbiting survey telescope TESS has discovered a second Earthsize planet in a solar system of four exoplanets.

The graphic to the right, a screen capture from a short video provided by the press release, shows these four exoplanets. Planet D had previously been discovered. Planet E is the new discovery, and is thought to be 95% Earth’s mass and likely terrestrial in make-up. Both are near the inner edge of the habitable zone.

TOI 700 is a small, cool M dwarf star located around 100 light-years away in the southern constellation Dorado. In 2020, Gilbert and others announced the discovery of the Earth-size, habitable-zone planet d, which is on a 37-day orbit, along with two other worlds.

The innermost planet, TOI 700 b, is about 90% Earth’s size and orbits the star every 10 days. TOI 700 c is over 2.5 times bigger than Earth and completes an orbit every 16 days. The planets are probably tidally locked, which means they spin only once per orbit such that one side always faces the star, just as one side of the Moon is always turned toward Earth.

This discovery only underlines the infinite possibilities and variables that exist for life on other worlds. These planets might be similar in mass to the Earth and get about the same heat/light energy from their sun, but the star is very different, their orbits are very different, and their environment is very different.

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Leaking Soyuz to return empty; Unmanned Soyuz to be launched to replace it

9:23 am

The Russians announced today the plan to deal with the leaking Soyuz capsule on ISS as well as provide transportation back to Earth for its three astronauts.

First, the damaged Soyuz will return empty to Earth. Second, the next Soyuz will be launched in February unmanned so that it can bring back all three astronauts. Their mission however will likely be extended. Instead of returning in March as planned, they will stay in orbit until September, when that capsule was originally going to return to Earth. If this happens, it means their flight will end up being about a full year long. For the American in that crew, Frank Rubio, this could mean he will set a new American record for the longest spaceflight.

The Russians also added these details about the puncture in the Soyuz, which is believed to have been caused by a meteor:

According to calculations, a hole in the instrument compartment of the spacecraft, observed with a camera of the American ISS Segment, could be caused by a one-millimeter particle striking the vehicle with a speed of around 7,000 meters per second. Borisov also said that a possibility of a manufacturing defect in the radiator system of Soyuz MS-22 had also been evaluated but had not been confirmed.

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ABL’s first launch attempt fails

9:14 am

The first launch of ABL’s RS1 rocket failed yesterday when the first stage engines shut down right after liftoff so that the rocket fell back onto the launchpad and exploded.

The company said in subsequent updates that the nine engines in its first stage shut down simultaneously after liftoff, causing the vehicle to fall back to the pad and explode. The company did not disclose when after liftoff the shutdown took place or the altitude the rocket reached. The explosion damaged the launch facility but no personnel were injured.

This rocket startup has raised several hundred million dollars, with its chief investor Lockheed Martin, which has also signed a contract for as many as 58 RS1 launches.

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China’s Mars orbiter and rover in trouble

8:37 am

Yesterday we reported a tweet from Scott Tilley that suggested engineers were having trouble establishing a communications link with China’s Mars orbiter Tienwen-1.

Today it appears that communications with China’s rover Zhurong have also not resumed following its winter hibernation from May until December.

The Post independently confirmed with two sources on Thursday that the rover should have resumed running by now, but no contact has been established.

Though Zhurong’s solar panels can be tilted to kick dust from them, during hibernation this is apparently not possible. Because the winter dust season this year was especially bad (killing InSight for example), it is possible that Zhurong experienced the same fate.

Zhurong had a 90 day mission, and instead lasted a year. Moreover, tt was never expected to survive a Martian winter. The achievement thus remains grand.

As for the Tienwen-1 orbiter, it would be a much bigger failure if communications cannot be re-established. China without question expected this orbiter to operate for years, even functioning as a communications link for later landers/rovers. Its loss will force a revision of later plans.

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SpaceX successfully launches 40 OneWeb satellites

10:02 pm

Using its Falcon 9 rocket, SpaceX tonight successfully placed 40 OneWeb satellites into orbit from Cape Canaveral, Florida.

This was only the second launch of this first stage, which landed successfully at Cape Canaveral. The rocket has now deployed all 40 satellites successfully, putting more than 80% of OneWeb’s constellation in orbit.

SpaceX had also planned a Starlink launch from Vandenberg in California tonight, but an hour before launch it was delayed until tomorrow.

At the moment only SpaceX and China have launched any satellites in 2023, and are both tied at 2 launches each.

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Virgin Orbit launch a failure today from Cornwall, Great Britain

4:43 pm

Five minutes after I posted the information below, Virgin Orbit’s announcer came on to announce that LauncherOne had suffered “an anomaly” and would not successfully place the satellites in orbit.

The failure must have occurred during a later stage after the rocket was released and was preparing for the second engine burn of its upper stage. They have ended the live stream without providing a further update, which is not surprising considering the data that needs to be analyzed.

Original post:
—————
Virgin Orbit today successfully completed the first orbital launch ever the United Kingdom, taking off from a runway in Cornwall, Great Britain, and then releasing its LaunchOne rocket from the bottom of a 747.

All in all 9 satellites were launched. This was Virgin Orbit’s fifth successful commercial launch, and hopefully will open a 2023 whereby the company will makeup for six months of bureaucratic red tape that essentially blocked about six launches last year. As of this writing the satellites have not yet deployed.

The 2023 launch race:

2 China
1 SpaceX

Two SpaceX launches coming later this evening.

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Defrosting Martian Dunes

3:07 pm

Defrosting Martian dunes
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was a captioned image on January 6, 2023 from the science team of the high resolution camera on Mars Reconnaissance Orbiter (MRO). From the caption by Alfred McEwen of the Lunar & Planetary Laboratory in Arizona:

In the late winter when first illuminated, the carbon dioxide frost at high latitudes will begin to sublimate. Over sand dunes, the defrosting spots and mass wasting on steep slopes produce striking patterns. This scene is especially artistic given the shapes of the dunes as well as the defrosting patterns.

» Read more

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Webb finds “wide diversity of galaxies in the early universe”

12:35 pm

Webb galaxies in the early universe
Click for full image.

New data from the Webb Space Telescope and presented this week at an astronomy conference has found that galaxies in the early universe exhibit much of the same range of shapes and morphologies seen in the recent universe, a result that was not expected.

The image to the right comes from the press release. You can read the research paper here [pdf].

The study examined 850 galaxies at redshifts of z three through nine, or as they were roughly 11-13 billion years ago. Associate Professor Jeyhan Kartaltepe from Rochester Institute of Technology’s School of Physics and Astronomy said that JWST’s ability to see faint high redshift galaxies in sharper detail than Hubble allowed the team of researchers to resolve more features and see a wide mix of galaxies, including many with mature features such as disks and spheroidal components.

“There have been previous studies emphasizing that we see a lot of galaxies with disks at high redshift, which is true, but in this study we also see a lot of galaxies with other structures, such as spheroids and irregular shapes, as we do at lower redshifts,” said Kartaltepe, lead author on the paper and CEERS co-investigator. “This means that even at these high redshifts, galaxies were already fairly evolved and had a wide range of structures.”

The results of the study, which have been posted to ArXiv and accepted for publication in The Astrophysical Journal, demonstrate JWST’s advances in depth, resolution, and wavelength coverage compared to Hubble. Out of the 850 galaxies used in the study that were previously identified by Hubble, 488 were reclassified with different morphologies after being shown in more detail with JWST. Kartaltepe said scientists are just beginning to reap the benefits of JWST’s impressive capabilities and are excited by what forthcoming data will reveal.

“This tells us that we don’t yet know when the earliest galaxy structures formed,” said Kartaltepe. “We’re not yet seeing the very first galaxies with disks. We’ll have to examine a lot more galaxies at even higher redshifts to really quantify at what point in time features like disks were able to form.”

In other words, it appears galaxies of all shapes, as we see them today, already existed 11-13 billion years ago, shortly after the universe was born. This defies most theories about the formation of the universe, which predict that these early galaxies would be different than today’s.

The data however at this point is sparse. Webb has only begun this work, and as Kartaltepe notes, they need to look a lot more galaxies.

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Two nearby galactic neighbors

11:46 am

Two nearby galactic neighbors
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope of two nearby galaxy neighbors to the Milky way.

This image from the NASA/ESA Hubble Space Telescope features the galaxy LEDA 48062 in the constellation Perseus. LEDA 48062 is the faint, sparse, amorphous galaxy on the right side of this image, and it is accompanied by a more sharply defined neighbour on the left, the large, disc-like lenticular galaxy UGC 8603. A smattering of more distant galaxies also litter the background, and a handful of foreground stars are also visible throughout the image.

LEDA 48062 is estimated to be approximately 30 million light years away. This image was part of a recent Hubble campaign to study every known galaxy within 33 million light years.

Assuming that UGC 8603 is about the same approximate distance, the utter dissimilarity between these two galaxies is quite mystifying. It is also possible that UGC 8603 is larger and much farther away.

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