POPULARITY
2 episodes with jan oort
Trillions of icy bodies mark the edge of the solar system. They form a shell that extends one or two light-years from the Sun in every direction. A passing star may sometimes give some of them a nudge toward the Sun. When they get here, they become comets – visitors from the icy deep. That distant region is known as the Oort Cloud. It’s named for Dutch astronomer Jan Oort, who was born 125 years ago today. He proposed the existence of the cloud in 1950. And today, that’s his best-known accomplishment. Yet it’s far from his most important work. Early in his career, he confirmed that the Milky Way is a wide, flat, spinning disk. And he showed that, instead of inhabiting the center of the galaxy, the solar system is in the hinterlands – many thousands of light-years outside the heart. Oort spent most of his career at Leiden University in the Netherlands, including decades as director of Leiden Observatory. When Germany invaded the country, though, he left his post instead of working with the Nazis. When he returned, after World War II, he became a pioneer in the new field of radio astronomy. He mapped giant clouds of gas and dust throughout the galaxy. Their distribution provided even more proof of his picture of the Milky Way. Oort continued his research until shortly before his death, in 1992. Scientists have named quite a few things in his honor, including an asteroid – and the icy shell known as the Oort Cloud. Script by Damond Benningfield
SpaceTime with Stuart Gary | Astronomy, Space & Science News
The Space, Astronomy & Science Podcast.SpaceTime Series 27 Episode 39*Unveiling the Einasto Supercluster: A Cosmic BehemothAstronomers have unveiled one of the most massive superclusters ever observed, a colossal structure named the Einasto Supercluster. Comprising thousands of galaxies and a mass of 20 followed by 15 zeros in stars, this supercluster is a testament to the pioneering work of Jan Oort, whose 95th birthday coincides with the discovery. The Einasto Supercluster, stretching 360 million light-years across, provides new insights into the large-scale structure of the universe, challenging our understanding of galactic evolution and the gravitational forces at play in these vast cosmic metropolises.*Humans Alter Asteroid's Path and ShapeIn a groundbreaking mission, humans have altered the shape and orbit of an asteroid. NASA's DART spacecraft collided with the asteroid moon Dimorphos, not only knocking it off course but also reshaping its entire structure. This kinetic impact demonstration confirms our capability to deflect potentially hazardous asteroids and marks a significant milestone in planetary defense strategies. The aftermath of the collision has been meticulously analyzed, revealing a reshaped Dimorphos with a shorter orbital period and a new, elongated form.*Hubble's New Glimpse into Jupiter's Stormy AtmosphereThe Hubble Space Telescope has captured stunning new images of Jupiter, offering a fresh perspective on the gas giant's turbulent weather systems. The iconic Great Red Spot, a storm large enough to engulf Earth, is showcased alongside other atmospheric phenomena. Despite its gradual shrinkage and color changes, the Great Red Spot still rages with high-speed winds, interacting with smaller vortices that may be influencing its longevity. Hubble's detailed observations continue to unravel the mysteries of Jupiter's dynamic climate and the forces shaping its grand tempests.For more SpaceTime and to support the show, visit our website at https://spacetimewithstuartgary.com where you can access our universal listen link, find show notes, and learn how to become a patron. Listen to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen and access show links via https://linktr.ee/biteszHQ. Support the show: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support. For more space and astronomy podcasts, visit our HQ at https://bitesz.com.
Join your hosts Matt and Jamie in this mini episode of the Interplanetary Podcast, as we voyage to the outer reaches of our solar system and beyond to uncover the enigmas of the Oort Cloud! This icy cloud of asteroids and comets, teetering on the edge of interstellar space, holds the answers to many questions about our solar system's formation and its cosmic interactions. In this episode, we'll be exploring the fascinating history of the Oort Cloud, discussing its namesake - Dutch astronomer Jan Oort, and revealing why this region of space is so vital for understanding our place in the galaxy. From explaining how the Oort Cloud could potentially harbor long-period comets, to exploring the complex gravitational influences of the Milky Way on this distant cloud, Matt and Jamie will guide you through an interstellar journey that's sure to captivate every space enthusiast. We'll also delve into a groundbreaking study, discussing the surprising link between the Oort Cloud, high-energy comets, and the formation of the Earth's continental crust. Plus, we'll ponder the broader implications of this research, and how it is shaping our view of Earth's interactions with cosmic forces. So buckle up for an astronomical adventure, as we journey through the mysteries and marvels of the Oort Cloud, and remember, the sky is not the limit! Hosts: Jamie Franklin and Matt Russell Music: Matt Russell / Iam7 Cover Image: Midjourney Additional Narration: George Russell Twitter @interplanetypod
Jan Oort was a pioneer in discovery, but more notably the discovery of the Oort Cloud - A hypothetical cloud of debris that contains many amazing secrets of our solar system. Listen in to find out! Anthony and Kristen are excited to tell you all about it. Swag: https://starmints.live Support us on Patreon at: https://www.patreon.com/StarMints
ព្រំដែនប្រព័ន្ធព្រះអាទិត្យរបស់យើង មិនមែនបញ្ចប់ត្រឹមតំបន់ខ្សែក្រវាត់គុយពែរនេះនោះទេ។ ទៅហួសពីខ្សែក្រវាត់គុយពែរនេះទៅ នៅមានតំបន់មួយទៀត ដែលគេឲ្យឈ្មោះថា អួតខ្លោវដ៍ ដោយយកទៅតាមឈ្មោះរបស់តារាវិទូហូឡង់ គឺ យ៉ាន អួត (Jan Oort)។ តំបន់អួតខ្លោវដ៍នេះ មានរាងជាស្វ៊ែរព័ទ្ធជុំវិញប្រព័ន្ធព្រះអាទិត្យ ហើយព្រំដែនខាងក្រៅបំផុត ស្ថិតនៅចម្ងាយរហូតដល់ទៅ ប្រមាណជា ១ឆ្នាំពន្លឺ ទៅ១,៥ឆ្នាំពន្លឺ ពីព្រះអាទិត្យ។ យ៉ាន អួត (Jan Oort) បានលើកសម្មតិកម្ម អំពីវត្តមាននៃតំបន់រាងជាស្វ៊ែរព័ទ្ធជុំវិញប្រព័ន្ធព្រះអាទិត្យរបស់យើង កាលពីឆ្នាំ១៩៥០ ពោលគឺ នៅក្នុងអំឡុងពេលប្រហាក់ប្រហែលគ្នា នឹងពេលដែលសម្មតិកម្មទាក់ទងនឹងខ្សែក្រវាត់គុយពែរ ត្រូវបានលើកឡើង ដោយតារាវិទូហូឡង់មួយរូបទៀត គឺ Gerard Kuiper។ ដូចទៅនឹងករណីខ្សែក្រវាត់គុយពែរដែរ សម្មតិកម្ម អំពីតំបន់អួតខ្លោវដ៍នេះ កើតចេញពីការសង្កេតទៅលើផ្កាយដុះកន្ទុយ ក៏ប៉ុន្តែ ខុសពី Gerard Kuiper ដែលផ្តោតការសិក្សាទៅលើផ្កាយដុះកន្ទុយ ដែលធ្វើដំណើរចូលមកក្បែរព្រះអាទិត្យជាលក្ខណៈទៀងទាត់ ទៅតាមវដ្តខ្លី ក្រោម ២០ឆ្នាំ យ៉ាន អួត វិញ កត់សម្គាល់ទៅលើផ្កាយដុះកន្ទុយមួយប្រភេទទៀត ដែលមានគន្លងចេញទៅយ៉ាងសែនឆ្ងាយពីព្រះអាទិត្យ ឆ្ងាយរហូតដល់ទៅរាប់ម៉ឺន ឬរាប់សែនដងនៃចម្ងាយរវាងព្រះអាទិត្យនិងភពផែនដីរបស់យើង។ ក្រៅពីមានគន្លងចេញទៅយ៉ាងឆ្ងាយពីព្រះអាទិត្យ គេក៏អាចសង្កេតឃើញផងដែរថា ផ្កាយដុះកន្ទុយអស់ទាំងនេះ មិនសុទ្ធតែមានគន្លងស្របទៅនឹងប្លង់របស់ភព ដូចជាផ្កាយដុះកន្ទុយ ដែលមកពីតំបន់ខ្សែក្រវាត់គុយពែរនោះទេ ផ្ទុយទៅវិញ មានផ្កាយដុះកន្ទុយខ្លះមានគន្លងរាងបញ្ឆិត ឬបញ្ឈរ ពីលើចុះក្រោម ឬពីក្រោមឡើងទៅលើក៏មាន។ ហេតុដូច្នេះហើយបានជា យ៉ាន អួត បានសន្និដ្ឋានថា នៅប៉ែកខាងក្រៅប្រព័ន្ធព្រះអាទិត្យ ចេញទៅឆ្ងាយហួសពីតំបន់ខ្សែក្រវាត់គុយពែរ នៅមានតំបន់មួយទៀត ដែលប្រមូលផ្តុំទៅដោយបំណែកតូចធំ ដែលបន្សល់ទុកតាំងពីពេលកកើតប្រព័ន្ធព្រះអាទិត្យ ក៏ប៉ុន្តែ ខុសពីតំបន់ខ្សែក្រវាត់គុយពែរ និងតំបន់ខ្សែក្រវាត់អាចម៍ផ្កាយ ដែលមានរាងមូលសំប៉ែតដូចថាស តំបន់អួតខ្លោវដ៍នេះវិញ គឺមានរាងមូលជាស្វ៊ែរព័ទ្ធជុំវិញប្រព័ន្ធព្រះអាទិត្យរបស់យើង។ ជាទូទៅ ការស្វែងរកបំណែក នៅក្នុងតំបន់អួតខ្លោវដ៍នេះ វាគឺជារឿងស្មុគស្មាញខ្លាំង ដោយសារតែវាស្ថិតនៅឆ្ងាយខ្លាំងពេកពីព្រះអាទិត្យ និងពីភពផែនដីរបស់យើង។ ដើម្បីងាយគិតសម្រៃអំពីចម្ងាយដ៏សែនឆ្ងាយនេះ យើងគួរកត់សម្គាល់ថា យាន Voyager ដែលជាយានដ៏មានល្បឿនលឿនបំផុត ហើយដែលបានធ្វើដំណើរចេញផុតពីដែនម៉ាញេទិចរបស់ព្រះអាទិត្យ ចូលទៅដល់លំហ Interstellar (ដែលពេលខ្លះត្រូវបានគេចាត់ទុកថាបានចេញផុតពីប្រព័ន្ធព្រះអាទិត្យរបស់យើងទៅហើយនោះ) តាមពិតទៅ នៅមិនទាន់ធ្វើដំណើរទៅដល់តំបន់អួតខ្លោវដ៍នៅឡើយនោះទេ។ ក្នុងល្បឿនបច្ចុប្បន្ននេះ Voyager ត្រូវចំណាយពេលប្រមាណជា ៣០០ឆ្នាំទៀត ទើបធ្វើដំណើរទៅដល់តំបន់អួតខ្លោវដ៍ ហើយទាល់តែប្រមាណជា ៣ម៉ឺនឆ្នាំទៀត ទើបអាចឆ្លងផុតតំបន់អួតខ្លោវដ៍នេះបាន។ បើទោះជាគេអាចធ្វើដំណើរក្នុងល្បឿនលឿនស្មើនឹងល្បឿនរបស់ពន្លឺក៏ដោយ ក៏គេត្រូវការពេលមិនតិចនោះដែរ ទើបអាចធ្វើដំណើរទៅដល់តំបន់អួតខ្លោវដ៍នេះបាន។ ក្នុងល្បឿន ៣០ម៉ឺនគីឡូម៉ែត្រក្នុងមួយវិនាទី ពន្លឺដែលចេញពីព្រះអាទិត្យត្រូវចំណាយពេលត្រឹមតែ ៨នាទីប៉ុណ្ណោះ ដើម្បីមកដល់ភពផែនដីរបស់យើង, ៤ម៉ោងកន្លះទៅដល់ភពណិបទូន ហើយចូលទៅដល់តំបន់ខ្សែក្រវាត់គុយពែរ, ប្រមាណជា ៧ម៉ោងកន្លះចេញផុតពីខ្សែក្រវាត់គុយពែរ ក៏ប៉ុន្តែ ទាល់តែប្រមាណជា ១០ថ្ងៃក្រោយមកទើបអាចចូលទៅដល់ព្រំដែនប៉ែកខាងក្នុងនៃតំបន់អួតខ្លោវដ៍ ហើយបន្ទាប់មកទៀត ត្រូវការពេលក្នុងរង្វង់ពី១ឆ្នាំ ទៅ១ឆ្នាំកន្លះទៀត ទើបពន្លឺដែលចេញពីព្រះអាទិត្យនេះ អាចធ្វើដំណើរចេញផុតពីតំបន់អួតខ្លោវដ៍។ និយាយជារួម ព្រំដែនខាងក្រៅបំផុតនៃតំបន់អួតខ្លោវដ៍ ស្ថិតនៅចម្ងាយរហូតដល់ទៅ ១ឆ្នាំ ឬ១ឆ្នាំកន្លះឯណោះពីព្រះអាទិត្យ ពោលគឺ ប្រមាណជា ១ភាគ៤ នៃចម្ងាយទៅកាន់ផ្កាយ Proxima Centauri ផ្កាយដែលស្ថិតនៅជិតបំផុតនឹងប្រព័ន្ធព្រះអាទិត្យរបស់យើង៕
Jan Hendrik Oort nació en Países Bajos en el año 1900. A lo largo del siglo XX, se convirtió en uno de los grandes impulsores de la radioastronomía. Trabajó incansablemente para ayudar a comprender mejor tanto la Vía Láctea como nuestro propio Sistema Solar. En este pequeño rincón de la galaxia, planteó que había una gran cantidad de objetos en las regiones más lejanas, en lo que hoy conocemos como la nube de Oort... Música: Epidemic Sound Escucha el episodio completo en la app de iVoox, o descubre todo el catálogo de iVoox Originals
The Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 2,000 to 200,000 AU.
Are there only 8 planets, what else makes up our solar system? What Are The Differences Between An Asteroid, Comet, Meteoroid, Meteor and Meteorite? Asteroid: A relatively small, inactive, rocky body orbiting the Sun. Comet: A relatively small, possibly active, object whose ice can vaporize in sunlight, comas [co-muh], or tails of gas and dust. Meteoroid: A small bit of a comet or asteroid that orbits the Sun Meteor: The light we see when a meteoroid enters the Earth's atmosphere and vaporizes. This is known as a shooting star or a meteor shower. Meteorite: A meteoroid that makes it through Earth’s atmosphere and lands. Meteoroid = Droid = Space Meteorite = Right here = Earth From Nasa.gov Each day, Earth is nailed with more than 100 tons of dust and particles from space. About once a year, an automobile-sized asteroid hits Earth's atmosphere, creates an impressive fireball, and burns up before reaching the surface. Every 2,000 years or so, a meteoroid the size of a football field hits Earth and causes significant damage to the area. Only once every few million years, an object large enough to threaten Earth's civilization comes along. Impact craters on Earth, the moon and other planetary bodies are evidence of these occurrences. Space rocks smaller than about 25 meters (about 82 feet) will most likely burn up as they enter the Earth's atmosphere and cause little or no damage. If a rocky meteoroid larger than 25 meters but smaller than one kilometer ( a little more than 1/2 mile) were to hit Earth, it would likely cause local damage to the impact area. We believe anything larger than one to two kilometers could have worldwide effects. By comparison, asteroids that populate the main asteroid belt between Mars and Jupiter, and pose no threat to Earth, can be as big as 940 kilometers (about 583 miles) across. Asteroid Belt Kuiper Belt Oort Cloud Asteroid Belt When the Solar System was just beginning to form, bits of rock, metal, and dust that circled the Sun starting clumping together to form large bodies, some of which became planets. However, not all of these combined to form planets. Some particles left over settled between Mars and Jupiter, forming the Asteroid Belt. The Asteroid Belt contains billions, and maybe even trillions of asteroids. Most of these range from the size of boulders to a few thousand feet in diameter. In fact, people used to believe that the asteroid belt was made up of the remains of a planet, or one that didn’t quite finish forming. However, according to NASA, the total mass of the asteroid belt is actually less than the moon!, far too small to weigh in as a planet. Kuiper Belt In 1943, astronomer Kenneth Edgeworth put forth that more objects that orbit the Sun might exist beyond Neptune. In 1951, astronomer Gerard Kuiper predicted the existence of this ring of icy bodies as well. While today we call it the Kuiper Belt, some astronomers refer to it as the Edgeworth-Kuiper Belt. Beyond our furthest planet Neptune, lies a region of space filled with these icy bodies. The Kuiper Belt includes trillions of objects, more than the Asteroid Belt, that remain from the early solar system. The Kuiper Belt is an elliptical plane in space spanning from 30 times Earth's distance from the sun to 50 times that. That’s up to 4.5 billion miles! The Kuiper Belt is similar to the asteroid belt, but KBO’s or Kuiper Belt Objects, tend to be more icy rather than rocky. Scientists estimate that thousands of bodies more than 62 miles in diameter travel around the sun in the Kuiper Belt, along with trillions of smaller objects like comets. “The region also contains several dwarf planets — round worlds too large to be considered asteroids and yet not qualifying as planets because they're too small, on an odd orbit, and don't clear out the space around them the way the eight planets do.” Pluto Oort Cloud In 1950, Dutch astronomer Jan Oort wonders about comets that entered the solar system that they came from a cloud of icy bodies that may lie as far as 100,000 times Earth's distance from the sun, a distance of up to 9.3 trillion miles (15 trillion kilometers). We call it, the Oort Cloud, A giant shell of icy bodies thought to surround the solar system not as a disc, but a sphere, completely encapsulating our solar system with possibly trillions of frozen comets and asteroids. These far away bodies are primarily composed of ices such as ammonia, methane, and water. These chucks are straight from the formation of our Solar System, and could give us insight into the environment we formed in. Sedna, thought to be three-quarters the size of Pluto, lies 8 billion miles (13 billion kilometers) from Earth and orbits the sun approximately every 10,500 years.
On this episode, we talked about quasars, long baseline interferometry, radioastronomy, the Hubble Space Telescope, LOFAR telescope in the Netherland, the theory of the Steady State, Challenger disaster, Jan Oort, the Universe Awareness program, and so much more. The guest for today’s episode is Gorge Miley. The post The evolution of astronomy in the last 50 years [Astro et al Ep.4] appeared first on Astronomy et al.
Tyson explica como se conoció el origen de los cometas gracias al trabajo de Jan Oort y su hipótesis de la nube de Oort. Continúa relatando la colaboración entre Edmond Halley e Isaac Newton que conduciría a la publicación de Philosophiae Naturalis Principia Mathematica, la primera obra importante en describir las leyes de la Física en términos matemáticos. Este libro desafió la noción prevalente de que Dios había diseñado los cielos para que se rigieran por su voluntad directa, demostrando que los astros siguen unas leyes gobernadas por la física. Termina explicando como este trabajo influenciaría muchos aspectos de la vida moderna y psobilitaría los vuelos espaciales. Las otras contribuciones de Halley fueron determinar la distancia de la Tierra al Sol, el hallazgo del movimiento propio de las estrella y la predicción de la llegada del cometa que fue bautizado con su nombre, usando las leyes de Newton.
Tyson explica como se conoció el origen de los cometas gracias al trabajo de Jan Oort y su hipótesis de la nube de Oort. Continúa relatando la colaboración entre Edmond Halley e Isaac Newton que conduciría a la publicación de Philosophiae Naturalis Principia Mathematica, la primera obra importante en describir las leyes de la Física en términos matemáticos. Este libro desafió la noción prevalente de que Dios había diseñado los cielos para que se rigieran por su voluntad directa, demostrando que los astros siguen unas leyes gobernadas por la física. Termina explicando como este trabajo influenciaría muchos aspectos de la vida moderna y psobilitaría los vuelos espaciales. Las otras contribuciones de Halley fueron determinar la distancia de la Tierra al Sol, el hallazgo del movimiento propio de las estrella y la predicción de la llegada del cometa que fue bautizado con su nombre, usando las leyes de Newton.
Melvyn Bragg and his guests discuss dark matter, the mysterious and invisible substance which is believed to make up most of the Universe. In 1932 the Dutch astronomer Jan Oort noticed that the speed at which galaxies moved was at odds with the amount of material they appeared to contain. He hypothesized that much of this 'missing' matter was simply invisible to telescopes. Today astronomers and particle physicists are still fascinated by the search for dark matter and the question of what it is. With Carolin Crawford Public Astronomer at the Institute of Astronomy, University of Cambridge and Gresham Professor of Astronomy Carlos Frenk Ogden Professor of Fundamental Physics and Director of the Institute for Computational Cosmology at the University of Durham Anne Green Reader in Physics at the University of Nottingham Producer: Simon Tillotson.
Melvyn Bragg and his guests discuss dark matter, the mysterious and invisible substance which is believed to make up most of the Universe. In 1932 the Dutch astronomer Jan Oort noticed that the speed at which galaxies moved was at odds with the amount of material they appeared to contain. He hypothesized that much of this 'missing' matter was simply invisible to telescopes. Today astronomers and particle physicists are still fascinated by the search for dark matter and the question of what it is. With Carolin Crawford Public Astronomer at the Institute of Astronomy, University of Cambridge and Gresham Professor of Astronomy Carlos Frenk Ogden Professor of Fundamental Physics and Director of the Institute for Computational Cosmology at the University of Durham Anne Green Reader in Physics at the University of Nottingham Producer: Simon Tillotson.
Roberto Pascua nos acerca a la figura del astrónomo holandés Jan Oort. Además, nos trae el hallazgo del CERN sobre los neutrinos y el equinocio de otoño.
Transcript: The comets we occasionally see as spectacular apparitions in the night sky are occasional visitors from the outer reaches of the solar system. In the 1950s the Dutch astronomer Jan Oort speculated about comets orbits and hypothesized the existence of a huge spherical cloud of comets spanning a distance of 50 to 100,000 astronomical units on highly elliptical orbits that took ten to sixty million years. Evidence for this was the fact that most comets are one time visitors to the inner solar system, that they arrive from any direction in the sky, and that by Kepler’s law they must spend most of their elliptical orbits at large distances from the Earth. The Oort cloud is therefore a hundred billion strong repository in a spherical halo of dead frozen comets awaiting their quick journeys into the inner solar system.
© 2020-2025 Ivy Podcast Discovery LLC
