Tag: space

CUTTING-EDGE ANALYSIS OF THE WINCHCOMBE METEORITE CONFIRMS PRESENCE OF LIFE-SUPPORTING ORGANIC COMPOUNDS

German researchers using a cutting-edge, chemical-free detection method have confirmed the presence of organic compounds in the Winchcombe Meteorite, including nitrogen and amino acids. The new findings confirm similar results from a previous analysis of the well-known space rock, although this is the first time such a detection was made without chemical treatments.

“The team of researchers are now the first to demonstrate, to a high degree of precision, the existence of some important nitrogen compounds in this meteorite with amino acids and heterocyclic hydrocarbons – without applying any chemical treatment, and by using a new type of detector design,” a press release announcing the findings explains.

WITNESSES SPOTTED WINCHCOMBE METEORITE FALLING OVER ENGLAND IN 2021

The Winchcombe meteorite gained some level of media attention after it was witnessed by a network of cameras falling from the sky over Winchcombe, England, in February 2021. This allowed researchers to locate it within days, offering those who study space rocks one of the most pristine specimens ever collected.

“Normally, meteorites are tracked down in the cold and hot deserts on Earth, where the dry climate means that they don’t weather very fast, but they do change as a result of humidity,” explained Dr. Christian Vollmer from the Institute of Mineralogy at Münster University. “If a meteorite fall is observed soon after the event and the meteorite is quickly collected, as was the case in Winchcombe, they are important ‘witnesses’ for us regarding the birth of our solar system – which makes them especially interesting for research purposes.”

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SOMETHING IS ORBITING THESE DISTANT EXOPLANETS AFTER ALL, ACCORDING TO RESEARCHERS WHO FIRE BACK OVER EXOMOON CONTROVERSY

The search for exomoons orbiting planets outside our solar system has sparked a significant debate within the astronomical community, involving a pair of contrasting studies that presented divergent viewpoints on the existence of exomoons Kepler-1625b-i and Kepler-1708b-i.

Much like Schrödinger’s oddball cat that is both dead and alive inside a box, we won’t really know until someone goes and looks. But in a new paper recently uploaded to the arXiv preprint server, a team of astronomers led by David Kipping from Columbia University takes issue with the drama surrounding the ongoing exomoon search. 

In 2017, Kipping, alongside Columbia University astronomer Alex Teachey, discovered the first possible exomoon candidate, Kepler-1625b-i, using the Hubble and Kepler telescopes. Years later, in 2022, Kipping, as well as astronomers from NASA, MIT, CalTech, UCLA, and other prominent institutions discovered a second possible exomoon, lovingly called Kepler-1708b-i.

For the astronomers, this was a home run. Not only were astronomers finding exoplanets out there, but finding exoplanets with exomoons. The team focused on known cold gas giants that were far away from their host stars, where the effect of the star’s gravity should not be enough to strip these gas giants of their exomoons. This makes sense. In our solar system, gas giants like Jupiter and Saturn have a lot of moons. It stands to reason that gas giant exoplanets could too.

In December of 2023, a study was published that dashed the exomoon theory against the proverbial lunar rocks. Published in Nature Astronomy, astronomers René Heller and Michael Hippke applied a new algorithm, called Pandora, to the previous exomoon research, and concluded, much like Obi-Wan Kenobi in Star Wars, that those were no moons.

It’s an astronomical roller coaster, and Kipping’s latest paper comes out swinging at Heller and Hippke.

“The reason they didn’t see them [the exomoons] is not because of the data (as they thought),” Kipping told The Debrief. “But it is actually because their algorithm for finding moons didn’t work properly.”

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ASTRONOMERS BAFFLED BY A MYSTERIOUS OBJECT IN THE “MASS GAP” BETWEEN NEUTRON STARS AND BLACK HOLES

Astronomers using a telescope array in South Africa have spotted a mysterious yet massive object within what astronomers term the “mass gap” between neutron stars and black holes, that also shares a binary orbit with a neutron star.

The fact that the mysterious object lies in this mass gap leads them to believe it is either the largest neutron star ever observed, the least massive black hole, or something else entirely. The discovery could have significant applications for understanding the “uncertain physics” underlying a range of massive cosmic objects.

Objects of this size are typically categorized as “astrophysical compact objects,” and they generally come in one of two varieties: black holes or neutron stars. Still, there is an enormous mass gap between the smallest black hole and the largest neutron star. For example, the largest neutron stars range between 2.2 to 2.5 solar masses, while black holes smaller than 5 solar masses are considered extremely rare. The result is a mass gap where these objects simply should not be.

As a result, discovering a compact astronomical object situated within this gap is a major event. Astronomers Ewan Barr and Arunima Dutta from the Max-Planck-Institut für Radioastronomie, who made the discovery, say that previous objects in this mass gap have also been spotted, but “the nature of these objects and the mechanisms through which they formed remain unknown.”

The astronomers made the discovery while scanning a globular cluster known as NGC 1851 using the Karoo Array Telescope (MeerKAT) in South Africa. There, they spotted a pulsar in a binary orbit with an unknown compact object with a mass that landed in the lower range of the mass gap.

“The nature of these mass gap objects is unknown, as is the formation of their host binary systems,” the researchers write in the study detailing their findings. They also point out that the companion’s mass of 2.09 to 2.71 (solar masses) is in the mass gap, “indicating either a very massive NS (Neutron Star) or a low-mass BH (Black Hole).”

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No, the James Webb Space Telescope hasn’t found life out there—at least not yet

The rumors have been out there for a while now, percolating through respectable corners of the astronomy and astrobiological community, that the James Webb Space Telescope has found a planet with strong evidence of life.

Some of this sentiment recently bubbled into the public view when the British news magazine The Spectator published an item titled “Have we just discovered aliens?” In accordance with Betteridge’s law of headlines, the answer to the question posed in this headline is no.

But is it a hard no? That’s a more difficult question. The Spectator featured comments by some serious British scientists, including astrophysicist Rebecca Smethurst, who said, “I think we are going to get a paper that has strong evidence for a biosignature on an exoplanet very, very soon.”

Additionally, there was British astronaut Tim Peake fanning the flames with this comment: “Potentially, the James Webb telescope may have already found [alien life]… it’s just that they don’t want to release or confirm those results until they can be entirely sure, but we found a planet that seems to be giving off strong signals of biological life.”

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Newly discovered cosmic megastructure challenges theories of the universe

Astronomers have discovered a ring-shaped cosmic megastructure, the proportions of which challenge existing theories of the universe.

The so-called Big Ring has a diameter of about 1.3bn light years, making it among the largest structures ever observed. At more than 9bn light years from Earth, it is too faint to see directly, but its diameter on the night sky would be equivalent to 15 full moons.

The observations, presented on Thursday at the 243rd meeting of the American Astronomical Society in New Orleans, are significant because the size of the Big Ring appears to defy a fundamental assumption in cosmology called the cosmological principle. This states that above a certain spatial scale, the universe is homogeneous and looks identical in every direction.

“From current cosmological theories we didn’t think structures on this scale were possible,” said Alexia Lopez, a PhD student at the University of Central Lancashire, who led the analysis. “We could expect maybe one exceedingly large structure in all our observable universe.”

Zooming out on the universe should, in theory, reveal a vast, featureless expanse. Yet the Big Ring is one of a growing list of unexpectedly large structures. Others include the Giant Arc, which appears just next to the Big Ring and was also discovered by Lopez in 2021. Cosmologists calculate the current theoretical size limit of structures to be 1.2bn light years, but the Big Ring and the Giant Arc, which spans an estimated 3.3bn light years, breach this limit.

Intriguingly, the two structures are at the same distance from Earth, near the constellations of Boötes the Herdsman, raising the possibility that they are part of a connected cosmological system.

“These oddities keep getting swept under the rug, but the more we find, we’re going to have to come face-to-face with the fact that maybe our standard model needs rethinking,” said Lopez. “As a minimum it’s incomplete. As a maximum we need a completely new theorem of cosmology.”

The Big Ring was discovered by analysing data from the Sloan Digital Sky Survey (SDSS), a catalogue of distant quasars. These objects are so bright that they can be seen from billions of light years away and act like giant, distant lamps, illuminating intervening galaxies that their light passes en route and which otherwise would go unseen.

Lopez and colleagues used several different statistical algorithms to identify potential large-scale structures and the Big Ring emerged. The structure appears as an almost perfect ring on the sky, but further analysis revealed it has more of a coil shape, like a corkscrew, which is aligned face-on with Earth.

Cosmologists are unsure what mechanism could have given rise to the structure. One possibility is a type of acoustic wave in the early universe, known as baryonic acoustic oscillations, that could give rise to spherical shells in the arrangement of galaxies today. Another explanation is the existence of cosmic strings, hypothetical “defects” in the fabric of the universe that could cause matter to clump along large-scale faultlines.

Dr Jenny Wagner, a cosmologist at the Bahamas Advanced Study Institute & Conferences, described the discovery as significant. “It doesn’t seem to be a mere chance alignment,” she said.

Wagner said it was possible to accommodate the Big Ring within the cosmological principle, depending on how its limits are defined, but that the more of these outlier, large-scale structures that are discovered, the less statistically plausible this view becomes. “This is why the search for further giant structures is so valuable,” she said. “Personally, I wouldn’t be surprised if we have to abandon the cosmological principle after future discoveries.”

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JAMES WEBB SPACE TELESCOPE DETECTS ANOMALOUS EMISSIONS COMING FROM MYSTERIOUS ISOLATED SPACE OBJECT

The James Webb Space Telescope has detected a massive object larger than Jupiter that appears to be producing infrared emission from methane, in an unexpected discovery by astronomers that could represent evidence of atmospheric heating resulting from auroral processes.

The discovery has baffled astronomers because the object, an isolated brown dwarf called W1935, is cold and lacks any host star to provide its upper atmosphere with the energy that usually drives such methane emissions. According to new research, it is believed the source of the object’s mysterious emissions could arise from processes generating its aurora.

Methane emission is commonly associated with gas giants like Jupiter. Heating that occurs in the planet’s upper atmosphere is the driving force behind this, and astronomers believe it is also linked to the vivid aurora that Jupiter and other gas giants often display.

The closest observations of aurorae occur when they are visible here on our own planet, as energetic particles emanating from the Sun collide with Earth’s magnetic field. Hence, the mystery of W1935, which, unlike planets in our solar system, receives no stellar wind to power its apparent methane emissions.

The discovery raises questions about what process could account for the brown dwarf’s eerie glow, which could result from the presence of interstellar plasmas or some underlying internal process, or even the presence of an active moon nearby, similar to how moons orbiting Jupiter and Saturn can also influence their auroral activity.

The discovery of W1935’s odd emissions occurred as part of a research effort led by astronomer Jackie Faherty with the American Museum of Natural History in New York. However, the brown dwarf’s discovery was made beforehand by Dan Caselden, a citizen scientist responsible for the discovery of other similar objects, with help from NASA’s Wide Field Infrared Survey Explorer.

Viewed through the James Webb Space Telescope’s powerful eye, W1935 appeared almost identical to another of Caselden’s discoveries, a brown dwarf with the designation W2220, except for W1935’s curious methane emissions, which were quickly evident in the infrared wavelengths observed by Webb.

Faherty said the observation initially confused her team.

“My first thought was, what the heck? Why is methane emission coming out of this object?” Faherty said in a statement.

Based on computer models, W1935 differed significantly from W2220 in that its atmosphere appeared to grow warmer in proportion to altitude, an apparent temperature inversion.

Ben Burningham, who led the models used in the research and a co-author of the team’s recent study, said this phenomenon has been observed before, but not on planets as isolated as W1935, which receive no heat from a nearby star.

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US Military Launches Highly Classified Unmanned Space Plane

The US Space Force launched a secretive plane on Thursday which has been equipped with heavier boosters that could feasibly send it further into orbit than ever before.

The launch marks the 9th flight of the three-core SpaceX Falcon Heavy booster, and the 7th flight of the US Air Force’s (not so) secret unmanned spaceplane, the X-37B (USSF-52).

The launch was previously scheduled for Dec. 10, however it was scrapped due to issues with ground equipment just 30 minutes before liftoff – pushing the event back 18 days.

Officially, the X-37B will enter into various orbits around Earth and serve as a testing ground for NASA’s study of the effects of long-duration exposure to space on organic materials, the Epoch Times reports, adding that the mission will also include experiments having to do with “space domain awareness,” which the US Space Force defines as the ability to “rapidly detect, warn, characterize, attribute, and predict threats to national, allied, and commercial space systems.”

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THIS STARTUP IS DEVELOPING A FUSION PROPULSION DRIVE FOR DEEP SPACE TRAVEL THAT COULD REACH MARS IN JUST TWO MONTHS

Helicity Space, a startup founded in 2018, is developing a fusion drive poised to transform space travel. With a fresh round of investment, the company is developing a proof-of-concept for a fusion-powered propulsion system that can get from Earth to Mars in two months.

In a recent press release, the space-based startup recently secured $5 million in seed funding from Airbus Ventures, TRE Ventures, Voyager Space Holdings, E2MC Space, Urania Ventures, and Gaingels. 

Unlike traditional rockets that rely on chemical reactions, Helicity’s fusion drive operates on a magneto-inertial fusion method. This involves fusing two hydrogen isotopes into helium, releasing immense energy – ten million times more per unit mass than chemical fuels​​.

According to Helicity, the core technology behind their fusion drive efficiently converts electricity into plasma heating, using a unique approach to scale fusion conditions and directly produce thrust​​. Their method, distinct from conventional magnetic or inertial (laser) fusion, employs self-organized Taylor relaxation and magnetic reconnection physics, combined with a peristaltic magnetic compression scheme.

In very simple terms, the engine uses hot ionized plasma gas heated by magnetic fields that are constantly forced together to the point where they must then break apart. It is this seesaw of magnetic forces that generates vast amounts of energy, heating the plasma to the point where fusion occurs, forcing the nuclei so close that they overcome their electrostatic repulsion and fuse together. To simplify this even more, the energy created by that fusion is aimed out of the tailpipe of the Helicity Drive, and you generate a helluva lot of thrust.

So much so that it cuts the current seven or eight-month trip to Mars down to two, or the six-year trip to Jupiter down to just one.

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China’s Spaceplane Has Released Multiple Mystery Objects In Orbit

China’s shadowy miniature spaceplane appears to have deployed at least six objects into orbit while conducting its latest mission, its third. The reusable space vehicle, which is understood to be broadly comparable to the U.S. Space Force’s X-37B, clearly has military applications, although the exact nature of its payloads remains mysterious.

The Chinese spaceplane, named Shenlong (meaning Divine Dragon), has placed the objects in Earth orbit since it was launched from the Jiuquan Satellite Launch Center on December 14. The existence of these objects has been confirmed by amateur spacecraft trackers.

The spaceplane itself is launched atop a traditional space launch rocket and is propelled into orbit using a secondary booster. It returns to Earth in an unpowered mode, much like the X-37B.

One amateur astronomer, Scott Tilley, told Space.com’s Brett Tingley that some of the objects — which have been named A, B, C, D, E, and F — seem to be transmitting signals. Tilley has described these objects as “mysterious wingmen,” a nod to the “loyal wingman” terminology used for the drones that operate collaboratively with piloted aircraft. The Shenlong, of course, is uncrewed.

Tilley also provided Space.com with details on the differences in transmissions between the objects, with Object A said to be sending small amounts of data, while Objects D and E seem to be only emitting “placeholder” signals, without accompanying data.

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These scientists want to put a massive ‘sunshade’ in orbit to help fight climate change

A group has been formed to study and promote a space-based sunshade to help fend off global climate change. 

The idea has been discussed for years, but the Planetary Sunshade Foundation is cranking out papers that support the concept and spotlight the practicality of the approach. 

A planetary sunshade, the Foundation advises, could be the best solution for solar radiation management and should be viewed as a key part of global efforts to counter ongoing climate change on Earth.

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