Indu Sharma’s Post

Imagine going back to the era before 1924. If you were to pick up an advanced telescope, gaze at the sky, and observe a system of star clusters, you would likely describe it as a new nebula. You might be curious as to why I used nebula and not galaxy. Dive into the full article at https://lnkd.in/dhfUUdaB for the answers you seek 📜 #ATGuide #astrophysics #astronomy #galaxy

𝐒𝐜𝐢𝐞𝐧𝐭𝐢𝐬𝐭𝐬 𝐓𝐡𝐢𝐧𝐤 𝐓𝐡𝐞𝐲'𝐯𝐞 𝐅𝐢𝐠𝐮𝐫𝐞𝐝 𝐎𝐮𝐭 𝐖𝐡𝐞𝐫𝐞 '𝐎𝐝𝐝 𝐑𝐚𝐝𝐢𝐨 𝐂𝐢𝐫𝐜𝐥𝐞𝐬' 𝐂𝐨𝐦𝐞 𝐅𝐫𝐨𝐦 Within the last five years, astronomers have discovered a new type of astronomical phenomenon that exists on vast scales – larger than whole galaxies. They're called ORCs (odd radio circles), and they look like giant rings of radio waves expanding outwards like a shockwave. Until now, ORCs had never been observed in any wavelength other than radio, but according to a new paper released on April 30 2024, astronomers have captured X-rays associated with an ORC for the first time. Continue Reading Here: https://shorturl.at/M8984 #Science #Radio #Space #MIDSCI

𝐒𝐜𝐢𝐞𝐧𝐭𝐢𝐬𝐭𝐬 𝐓𝐡𝐢𝐧𝐤 𝐓𝐡𝐞𝐲'𝐯𝐞 𝐅𝐢𝐠𝐮𝐫𝐞𝐝 𝐎𝐮𝐭 𝐖𝐡𝐞𝐫𝐞 '𝐎𝐝𝐝 𝐑𝐚𝐝𝐢𝐨 𝐂𝐢𝐫𝐜𝐥𝐞𝐬' 𝐂𝐨𝐦𝐞 𝐅𝐫𝐨𝐦 Within the last five years, astronomers have discovered a new type of astronomical phenomenon that exists on vast scales – larger than whole galaxies. They're called ORCs (odd radio circles), and they look like giant rings of radio waves expanding outwards like a shockwave. Until now, ORCs had never been observed in any wavelength other than radio, but according to a new paper released on April 30 2024, astronomers have captured X-rays associated with an ORC for the first time. Continue Reading Here: https://shorturl.at/M8984 #Science #Radio #Space #MIDSCI

#astronomy An article accepted for publication in the journal "Monthly Notices of the Royal Astronomical Society" reports the discovery of a primordial #galaxy that was cataloged as REBELS-25 and shows a rotating structure that is already ordered in a way that isn't expected from such an ancient galaxy. A team of researchers used the #ALMA radio telescope to study REBELS-25 and trace the movement of gas within it. The data collected will be invaluable in understanding how a galaxy that we see as it was when the universe was about 700 million years old can have a structure that is already becoming a spiral like the one of the Milky Way at that time. https://lnkd.in/dj7Y63YU

🌌 Astrophysicist Risa Wechsler explains: 85% of the matter in the universe is dark matter, a substance that interacts through gravity but doesn't emit light. American astronomer Vera Rubin observed that stars on the outer edges of galaxies were rotating faster than anticipated, leading her to deduce the existence of substantial amounts of invisible dark matter. The Rubin Observatory will enhance our understanding by mapping 20 billion galaxies across half the sky using gravitational lensing to pinpoint all matter, visible or not. Additionally, it will explore tiny galaxies with few stars but massive dark matter clumps, providing insights into dark matter's properties. This comprehensive survey will potentially reveal clues about dark matter's particle and further elucidate the universe's structure and evolution. For more: https://lnkd.in/gnTFZamC #SLACExplains #RubinObservatory #capturethecosmos #Astronomy #DarkMatter #DarkEnergy

CRUNCHY TOPIC: Astronomical Spectroscopy https://lnkd.in/gtVPzS_A "Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, ultraviolet, X-ray, infrared and radio waves that radiate from stars and other celestial objects. A stellar spectrum can reveal many properties of stars, such as their chemical composition, temperature, density, mass, distance and luminosity. Spectroscopy can show the velocity of motion towards or away from the observer by measuring the Doppler shift. Spectroscopy is also used to study the physical properties of many other types of celestial objects such as planets, nebulae, galaxies, and active galactic nuclei." ~Wikipedia Join Jeff and Pam LIVE on Friday nights at 9pm Pacific time, USA. The Friday night show is broadcast on FB and YouTube - just look for Everyday Spacer on either platform. If you'd like to ask questions, share Space Station sightings or ask what planet you saw in the sky, we'll help you out. We'll have a main topic or a guest, then share the highlights of the week ahead and the rest will be ad lib. It might be VERY ad lib sometimes! LOL #espacer #EverydaySpacer

Here's a #fascinating bit of #space #news for your Monday -- astronomers have discovered a mysterious celestial body in the Milky Way galaxy! Believed to possibly be a black hole, this unknown object is thought to have the potential to reveal new information about the formation of these supermassive enigmas. However, it might not be a black hole at all... The alternative theory is that, because of its incredible density, it could be a neutron star. With neutron stars being by far one of the densest objects in the universe, it's believed that if a neutron star were to become any more dense, it would become so heavy that it would collapse into a black hole. But what's so unique about this mystery object is that it's simultaneously heavier than the heaviest known neutron star, but lighter than the lightest known black hole! Because of this, scientists will be watching what they're calling the "black hole mass gap" closely as it could be the answer to how black holes are formed! Do you believe that this mystifying entity holds the answers that astronomers have sought for decades... or could it be the discovery of a whole new era of questions? Read more below: #blackhole #astronomy #galaxy #discovery https://lnkd.in/eNS2NhsT

Astronomy Picture of the Day (APOD) NGC 2403 in Camelopardalis (APOD: 2024 Jun 03) Image Credit & Copyright: (Team F.A.C.T.) Lilian Lbt - Cyrille Malo - Maxime Martin - Clément Daniel - Paul Grasset - Louis Leroux-Géré https://lnkd.in/ewUQAR43 Explanation: Magnificent island universe NGC 2403 stands within the boundaries of the long-necked constellation Camelopardalis. Some 10 million light-years distant and about 50,000 light-years across, the spiral galaxy also seems to have more than its fair share of giant star forming HII regions, marked by the telltale reddish glow of atomic hydrogen gas. The giant HII regions are energized by clusters of hot, massive stars that explode as bright supernovae at the end of their short and furious lives. A member of the M81 group of galaxies, NGC 2403 closely resembles a galaxy in our own local galaxy group with an abundance of star forming regions, M33, the Triangulum Galaxy. Spiky in appearance, bright stars in this portrait of NGC 2403 are in the foreground, within our own Milky Way. Also in the foreground of the deep, wide-field, telescopic image are the Milky Way's dim and dusty interstellar clouds also known as galactic cirrus or integrated flux nebulae. But faint features that seem to extend from NGC 2403 itself are likely tidal stellar streams drawn out by gravitational interactions with neighboring galaxies. https://lnkd.in/ekEn8A5R #APOD

🔭 Exploring the Final Frontier: A New Age of Cosmic Discovery 🌟🚀 Astronomy is entering a golden era, where each new discovery brings us closer to understanding the mysteries of the universe! ✨ Thanks to the revolutionary James Webb Space Telescope, we’re capturing breathtaking images of distant galaxies, exoplanets, and cosmic wonders that were once beyond our reach. 🌌 One of the most thrilling breakthroughs is the detection of gravitational waves—space-time ripples that give us a new way to observe black hole mergers and neutron star collisions. 🌠 These discoveries are not just scientific milestones; they’re the keys to unlocking the deepest secrets of our universe. 🔑 With the power of AI and machine learning, astronomers are now sifting through cosmic data faster than ever, uncovering new galaxies, predicting star formations, and much more. 🌠💡 As we continue to push the boundaries of our knowledge, the universe reminds us that there’s always more to explore. What an exciting time to be curious about the cosmos! 🌍🌠 #Astronomy #SpaceExploration #CosmicDiscoveries #GravitationalWaves #JamesWebbSpaceTelescope #AIInAstronomy #ScienceRocks

Astronomy Picture of the Day (APOD) Comet Tsuchinshan-ATLAS Approaches (APOD: 2024 Sep 23) Image Credit & Copyright: Brian Valente & Greg Stein https://lnkd.in/dVv4hSDP Explanation: What will happen as this already bright comet approaches? Optimistic predictions have Comet C/2023 A3 (Tsuchinshan–ATLAS) briefly becoming easily visible to the unaided eye -- although the future brightness of comets are notoriously hard to predict, and this comet may even break up in the warming sunlight. What is certain is that the comet is now unexpectedly bright and is on track to pass its closest to the Sun (0.39 AU) later this week and closest to the Earth (0.47 AU) early next month. The featured image was taken in late May as Comet Tsuchinshan–ATLAS, discovered only last year, passed nearly in front of two distant galaxies. The comet can now be found with binoculars in the early morning sky rising just before the Sun, while over the next few weeks it will brighten as it moves to the early evening sky. https://lnkd.in/dAX6kHPE #APOD