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Showing posts with the label astrophysics

Inilah Yang Terjadi pada Tubuh Astronaut Selama 9 Bulan di Luar Angkasa

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Dua astronot dari Amerika Serikat, Barry "Butch" Wilmore dan Suni Williams, akhirnya kembali ke Bumi pada hari Selasa tanggal 18 Maret 2025. Mereka telah menghabiskan waktu sekitar sembilan bulan di Stasiun Luar Angkasa Internasional (ISS), Bunda. Wilmore dan Williams sebenarnya melaksanakan tugas selama delapan hari saja di ISS. Akan tetapi, kedua astronot ini harus mengubah rencana perjalanan mereka karena ada masalah dengan kapsul antariksa yang semula direncanakan untuk mem-bawa mereka kembali ke Bumi. Wilmore dan Williams kembali ke planet Bumi menggunakan kapsul milik SpaceX. Begitu sampai, para astronot NASA tersebut harus beradaptasi lagi dengan kondisi hidup terpengaruh oleh gaya gravitasi. Saat berada di ruang angkasa, tubuh para astronot bisa merasakan beberapa perubahan besar, termasuk pada struktur DNA-nya. Tanpa adanya pengaruh gravitasi Bumi untuk menarik badannya ke bawah, tubuh mereka menjadi lebih panjang. Di samping itu, aliran cairan dalam tu...

Ditemukan Pabrik Planet Abad 30 Juta Tahun, Lawan Teori Klasik

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gudangmovies21 - Para ahli astronomi telah lama berpikir bahwa cincin gas dan debu yang menciptakan planet di sekeliling bintang muda hanya dapat bertahan kira-kira 10 juta tahun. Akan tetapi, temuan baru-baru ini melalui penggunaan Teleskop James Webb dari NASA mengungkapkan bahwa pada bintang-bintang dengan massa rendah, disk tersebut bisa mempertahankan eksistensinya hingga tiga kali lipat waktu itu—yaitu sampai 30 juta tahun. Teleskop Webb menunjukkan bahwa ada area yang tenang dan berlimpah dengan gas di dekat bintang-bintang kecil tersebut, memperlihatkan peluang baru untuk terbentuknya planet dalam waktu lebih lama daripada perkiraan sebelumnya. Ini bisa memberikan dampak signifikan dalam memahami perkembangan planet serta potensi keberadaan makhluk hidup di alam semesta lain. Sistem tertentu yang mendapat perhatian istimewa ialah TRAPPIST-1, dimana planetsinya mungkin telah diberi kesempatan tambahan untuk berkembang dalam area yang ramah penghuni. 'Pabrik...

'Curveball from the Cosmos': Giant Map Reveals We Might Have Dark Energy All Wrong

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Scientists examining the most extensive cosmic map ever created have uncovered suggestions that our current comprehension of the universe may require significant revisions. The study, which examined approximately 15 million galaxies and quasars covering 11 billion years of cosmic history, revealed that dark energy —the supposedly steady force propelling the rapid expansion of our cosmos—might be losing strength. At the very least, according to the data gathered by the Dark Energy Spectroscopic Instrument (DESI) suggests that when combined with data obtained from star explosions, observations of the cosmic microwave background, and effects of weak gravitational lensing, we can gain further insights. Should their discoveries stand firm, it indicates that one of the most enigmatic forces shaping our universe’s destiny is far stranger than initially imagined—and that there may be significant flaws in our present cosmic model. The research team's findings have been docum...

Mystery Unveiled: James Webb's Shocking Discovery Suggests We Might Be Inside a Black Hole

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A recent finding with the James Webb Telescope suggests that we might reside inside a black hole. The telescope, launched by NASA Three years ago, provided us with the capability to capture images of deep space with an unparalleled level of detail. Recently, new pictures have revealed that out of 263 galaxies observed with the James Webb Space Telescope, approximately two-thirds spin in the reverse direction compared to our Milky Way galaxy. It was anticipated that the quantity of galaxies spinning clockwise versus those spinning counterclockwise should have been nearly equal. Although the cause of this disparity remains unknown at present, one theory that could account for it is that our whole cosmos may be situated within a black hole. "The theory suggests that the universe came into existence spinning," stated Lior Shamir, a computer scientist from Kansas State University, in an official release. The provided explanation aligns with concepts like bla...

Fine-Tuning Einstein's Equations: The Key to Unlocking Black Hole Mysteries

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Theoretical physicists have put forward a possible answer to one of the most perplexing issues in contemporary physics: the black hole singularity paradox. By altering Einstein's theory of general relativity. relativity The researchers propose in a new study that the center of a black hole, characterized by infinite curvature, might instead be a highly curved yet smooth area of spacetime. "Singularities are areas in the universe where space, time, and matter are compressed and elongated into nothingness," according to study co-author. Robie Hennigar A postdoctoral researcher at Durham University in the U.K., communicated with Live Science through an email stating, “This is a significant issue because if singularities actually existed within our universe, it would lead to major problems for scientific understanding.” We couldn't continue using the equations anymore. physics To forecast the future using the past and present," he went on to say. ...

Scientists Warn: Hidden Supermassive Black Holes May Be Lurking Closer Than We Imagined

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The universe could be home to far more supermassive black holes than we realised, according to new research. The researchers propose that numerous such structures remain concealed from our sight—indicating that we may have significantly underestimated the number of these rotating voids in our universe. cosmos . Astronomers from the University of Southampton say that 35% of these galactic giants - some which are billions of times heavier than the sun - have gone undiscovered because they are obscured by thick clouds of gas and dust. This number had previously been estimated to be about 15%. Professor Poshak Gandhi, co-author of the study published in the Astrophysical Journal, said: “Black holes are the most mysterious objects in the universe and are present everywhere - yet we still don’t fully know how they evolve. “We’ve found that many more are lurking in plain sight - hiding behind dust and gas rendering them invisible to normal telescopes. This marks the in...

What Really Happens to the Human Body at Near-Lightspeed?

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In the realm of science fiction, spacecraft capable of reaching or surpassing the speed of light allow for vast interstellar expeditions. However, within our earthly confines, hurtling through space at the velocity of light—equivalent to 299,792,458 meters per second or approximately 670,616,629 miles per hour in a vacuum—is physically unattainable with current technology. "Light-speed is exclusively where objects without mass can move," explains Gerd... In science fiction narratives, spacecraft capable of reaching or surpassing the speed of light open up possibilities for exploring every corner of the universe. However, within our earthly confines, propelling even a cumbersome rocket to travel at such velocity—299,792,458 meters per second or approximately 670,616,629 miles per hour—in the vacuity of space remains an unattainable dream. physical impossibility “It’s how fast massless objects move,” he explains. Gerd Kortemeyer , an associate professor emeritus o...