Unveiling the cosmic marvel of Cassiopeia A! 🚀 NASA's Webb Telescope, treats us to a groundbreaking view of the supernova remnant. Dive into vibrant filaments resembling shattered glass and unravel the mysteries of Baby Cas A's mesmerizing glow. 🪐 Explore unprecedented insights into stellar explosions and dynamic processes with Webb's high-definition precision. 🔭✨ Don't miss the cosmic revelations—read more about this stellar breakthrough now! 🌠 #WebbTelescope #CassiopeiaA #StellarInsights 🌟 Read the article here
Proof Gaza Hospital hit by faulty Islamic Jihad rocket - not the IDF
Israel has releases these images proving that the Islamic Jihad is responsible for the bombing of a Gaza Hospital- the Baptist Hospital - in which Gaza officials say 500 Palestinians have been killed.
Prepare to be awestruck because NASA's James Webb Space Telescope has just dropped some mind-blowing revelations about the universe's expansion rate, and it's a cosmic rollercoaster of discoveries! 🌠
🔭 Imagine a telescope that can peer back in time and unveil the secrets of our universe's evolution. That's exactly what the Webb Telescope, NASA's latest star player, has been up to!
🌟 The Hubble Constant Mystery: One of the cosmos' biggest head-scratchers has been the Hubble Tension – a cosmic conundrum stemming from a puzzling mismatch between the measured expansion rate (Hubble constant) and its prediction from the Big Bang. 🌌
🌠 Cepheid Variables & Type Ia Supernovae: Webb's got some stellar assistants – Cepheid variables and Type Ia supernovae. These cosmic gems help astronomers measure vast cosmic distances and, by extension, the Hubble constant. 💫
🌈 Infrared Vision Superpowers: What sets Webb apart is its remarkable near-infrared vision. Unlike visible light, infrared light pierces through cosmic dust, offering clearer views of these celestial distance markers. 🌌
🪐 Results So Far: Webb's observations have confirmed the precision of the Hubble Space Telescope's earlier measurements while significantly reducing measurement noise. It's like seeing the universe's secrets with a magnifying glass! 🔍🌠
🔮 The Hubble Tension Deepens: But here's the kicker: the Hubble Tension persists! The universe seems to be expanding faster than we predicted. Could this be a hint of exotic dark energy, dark matter, or something completely unexpected? 🌌✨
🚀 The Cosmic Adventure Continues: With Webb confirming Hubble's measurements, the quest to decipher the universe's mysteries deepens. What's next? More observations, more data, and more cosmic riddles to solve! 🌌🔍
Join us as we journey into the heart of the cosmos, armed with the Webb Telescope's revelations and an insatiable curiosity for the universe's grand secrets. Stay tuned for more cosmic updates! 🌠🛰️
Read all 100 facts here
Zoom into NGC-346
An astronomical waltz reveals a sextuplet of planets
An international collaboration between astronomers using the CHEOPS and TESS space satellites, including NCCR PlanetS members from the University of Bern and the University of Geneva, have found a key new system of six transiting planets orbiting a bright star in a harmonic rhythm. This rare property enabled the team to determine the planetary orbits which initially appeared as an unsolvable riddle.
CHEOPS is a joint mission by ESA and Switzerland, under the leadership of the University of Bern in collaboration with the University of Geneva. Thanks to a collaboration with scientists working with data from NASA’s satellite TESS, the international team could uncover the planetary system orbiting the nearby star HD110067. A very distinctive feature of this system is its chain of resonances: the planets orbit their host star in perfect harmony. Part of the research team are researchers from the University of Bern and the University of Geneva who are also members of the National Center of Competence in Research (NCCR) PlanetS. The findings have just been published in Nature.
The planets in the HD110067 system revolve around the star in a very precise waltz. When the closest planet to the star makes three full revolutions around it, the second one makes exactly two during the same time. This is called a 3:2 resonance. “Amongst the over 5000 exoplanets discovered orbiting other stars than our Sun, resonances are not rare, nor are systems with several planets. What is extremely rare though, is to find systems where the resonances span such a long chain of six planets” points out Dr. Hugh Osborn, CHEOPS fellow at the University of Bern, leader of CHEOPS observation programme involved in the study, and co-author of the publication. This is precisely the case of HD110067 whose planets form a so-called “resonant chain” in successive pairs of 3:2, 3:2, 3:2, 4:3, and 4:3 resonances, resulting in the closest planet completing six orbits while the outer-most planet does one.
A seemingly unsolvable puzzle
Although multiple planets were initially detected thanks to their transits, the exact arrangement of the planets was unclear at first. However, the precise gravitational dance enabled the scientists’ team to solve the puzzle of HD110067. Prof. Adrien Leleu from the University of Geneva, in charge of analysing the orbital resonances, and co-author of the study, explains: “A transit occurs when a planet, from our point of view, passes in front of its host star, blocking a minute fraction of the starlight, creating an apparent dip of its brightness.” From the first observations carried out by NASA’s TESS satellite, it was possible to determine that the two inner planets called ‘b’ and ‘c’ have orbital periods of 9 and 14 days respectively. However, no conclusions could be drawn for the other four detected planets as two were seen to transit once in 2020 and once in 2022 with a large 2-year gap in the data, and the other two transited only once in 2022.
The solution to the puzzle for those four additional planets finally began to emerge thanks to observations with the CHEOPS space telescope. While TESS aims at scanning all of the sky bit by bit to find short-period exoplanets, CHEOPS is a targeted mission, focusing on a single star at a time with exquisite precision. “Our CHEOPS observations enabled us to find that the period of planet ‘d’ is 20.5 days. Also, it ruled out multiple possibilities for the remaining three outer planets, ‘e’, ‘f’ and ‘g’,” reveals Osborn.
Predicting the precise waltz of the planets
That is when the team realized that the three inner planets of HD110067 are dancing in a precise 3:2, 3:2 chain of resonances: when the innermost planet revolves nine times around the star, the second revolves six times and the third planet four times.
The team then considered the possibility that the three other planets could also be part of the chain of resonances. “This led to dozens of possibilities for their orbital period,” explains Leleu, “but combining existing observational data from TESS and CHEOPS, with our model of the gravitational interactions between the planets, we could exclude all solutions but one: the 3:2, 3:2, 3:2, 4:3, 4:3 chain.” The scientists could therefore predict that the outer three planets (‘e’, ‘f’ and ‘g’) have orbital periods of 31, 41 days, and 55 days.
This prediction allowed to schedule observations with a variety of ground-based telescopes. Further transits of planet ‘f’ were observed, revealing it was precisely where theory predicted it based on the resonant-chain. Finally, reanalysis of the data from TESS revealed two hidden transits, one from each of planets ‘f’ and ‘g’, exactly at the times expected by the predictions, confirming the periods of the six planets. Additional CHEOPS observations of each planet, and in particular planet ‘e’ are scheduled in the near future.
A key system for the future
From the handful of resonant-chain systems found so far, CHEOPS has highly contributed to the understanding of not only HD110067, but also of TOI-178. Another well-known example of a resonant-chain system is the TRAPPIST-1 system which hosts seven rocky planets. However, TRAPPIST-1 is a small and incredibly faint star which makes any additional observations very difficult. HD110067, on the other hand, is more than 50 times brighter than TRAPPIST-1.
“The fact that the planets in the HD110067 system have been detected by the transit method is key. While they pass in front of the star, light also filters through the planetary atmospheres” points out Jo Ann Egger, PhD student at the University of Bern, who computed the composition of the planets using CHEOPS data, and co-author of the study. This property is allowing astronomers to determine the chemical composition and other properties of the atmospheres. Since a lot of light is required, the bright star HD110067 and its orbiting planets are an ideal target for further studies to charachterize the planetary atmospheres. “The sub-Neptune planets of the HD110067 system appear to have low masses, suggesting they may be gas- or water-rich. Future observations, for example with the James Webb Space Telescope (JWST), of these planetary atmospheres could determine whether the planets have rocky or water-rich interior structures,” concludes Egger.
TOP IMAGE....A rare family of six exoplanets has been unlocked with the help of ESA’s Cheops mission. The planets in this family are all smaller than Neptune and revolve around their star HD110067 in a very precise waltz. When the closest planet to the star makes three full revolutions around it, the second one makes exactly two during the same time. This is called a 3:2 resonance. The six planets form a resonant chain in pairs of 3:2, 3:2, 3:2, 4:3, and 4:3, resulting in the closest planet completing six orbits while the outer-most planet does one. Cheops confirmed the orbital period of the third planet in the system, which was the key to unlocking the rhythm of the entire system. This is the second planetary system in orbital resonance that Cheops has helped reveal. The first one is called TOI-178. Credit © ESA
LOWER IMAGE....Tracing a link between two neighbour planet at regular time interval along their orbits, creates a pattern unique to each couple. The six planets of the HD110067 system create together a mesmerising geometric pattern due to their resonance-chain. Credit © , Thibaut Roger/NCCR PlanetS
James Webb Telescope just dropped a BOMBSHELL about Titan, Saturn’s moon! Methane clouds rising, a new molecule discovered, and clues to life’s origins? Dive into the mind-blowing details of Titan’s Earth-like weather and chemistry in our exclusive article! Don’t miss out—read now and share the cosmic wonder!
In a remarkable display of cosmic interaction, the latest images captured by the James Webb Space Telescope unveil a captivating scene within the Orion Nebula, known as the Orion Bar. Read full article here
Could Europa Host Alien Life? Dive Into 100 Fascinating Facts About Jupiter’s Icy Moon! Europa, one of Jupiter’s moons, hides an ocean twice the size of Earth’s oceans—and it might be teeming with life! This NASA infographic compares Europa’s subsurface ocean to Earth’s, showing why scientists are so excited about its potential habitability. From its icy crust to the Europa Clipper mission, our latest article uncovers 100 mind-blowing facts about Europa that will spark your curiosity. Check it out now: here What do you think—could Europa be the key to finding extraterrestrial life? Share your thoughts below!
🚀✨ Unlocking the Mysteries of Mars: 100 Fascinating Facts! 🌌🔴 Read the full article here
🌟 Get ready to dive deep into the enigmatic world of Mars. From colossal volcanoes 🌋 to ancient riverbeds 🏞️, and even the search for signs of life, we've got 100 mind-blowing facts that will make you see the Red Planet in a whole new light!
🔍 Curiosity Rover's adventures, the mysteries of Martian methane, and the epic tales of dust storms – it's all here! Did you know about the "Quadrantia effect" or the captivating dance of Phobos and Deimos around Mars? 🌌🕺💃
🚁 And who could forget Ingenuity, the little helicopter that soared to new heights, literally! 🚁✨
👽👾 Will humans colonize Mars? What's the deal with those methane mysteries? Let's explore the possibilities and embrace the unknown together!
Let's spread the Martian love! 🚀❤️ #MarsFacts #RedPlanetRevelations #SpaceExploration #TumblrSpaceJunkies
Never miss another James Webb Discovery. Tracking all the amazing discoveries made by the James Webb Space Telescope at https://www.jameswebbdiscovery.com, Follow now!
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