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Astronomers discover a missing link in planet formation ‘dust traps’

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But astronomers have struggled to assemble a complete theory of their origin that explains how the initial dust develops into planetary systems. A French-UK-Australian team now think they have the answer, with their simulations showing the formation of ‘dust traps’ where pebble-sized fragments collect and stick together, to grow into the building blocks of planets. Our Solar system, and other planetary systems, began life with disks of gas and dust grains around a young star. The processes that convert these tiny grains, each a few millionths of a metre (a micron) across, into aggregates a few centimetres in size, and the mechanism for making kilometre-sized ‘planetesimals’ into planetary cores, are both well understood. The intermediate stage, taking pebbles and joining them together into objects the size of asteroids, is less clear, but with more than 3,500 planets already found around other stars, the whole process must be ubiquitous. Dr Jean-Francois Gonzalez, of the Centre de Recherche Astrophysique de Lyon, in France, led the new work. He comments: “Until now we have struggled to explain how pebbles can come together to form planets, and yet we’ve now discovered huge numbers of planets in orbit around other stars. That set us thinking about how to solve this mystery.” There are two main barriers that need to be overcome for pebbles to become planetesimals. Firstly the drag of gas on dust grains in a disk makes them drift rapidly towards the central star, where they are destroyed, leaving no material to form planets.

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New Planet

Sky, Sun & Flybys – Pics of Planets & Stars (Nikon P1000 Thoughts)

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A look at Thursday’s Ohio Sky with a horde of stuff scooting around up there. Some short clips of Jupiter and Saturn from last night’s footage, plus some wider star & planet photos. A bit of a ramble about the new Nikon P1000 camera coming out on Sept 6th, 2018.

11:05am, Thursday July 12, 2018, NE Ohio, 83°F – SE Sky

~Jayling
(Ohio is in the Eastern Time Zone)

-Canon 80D with Tamron 18-400mm Lens
-Atomos Ninja Flame 7″ 4K Field Monitor/Recorder
-Nikon P900 with 83x optical zoom & 166x digital zoom
-B&W ND Filters, 10 Stop & 6 Stop Stacked for Solar Viewing

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Top 10 Recently Discovered EARTH LIKE PLANETS | Videos In Urdu

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Top 10 Recently Discovered EARTH LIKE PLANETS | Videos In Urdu

In This Video Series Of Science And technology we will discuss solar system planets and good things about planet earth. This particular video is about earth like planets recently announced by nasa discovery. Possibility of life on other planets. These new planets discovered are most like earth. Many of them are extremely habitable because these planet looks like earth. These videos in urdu are very good.
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BREAKING NEWS: NASA CONFIRM NIBIRU ARRIVAL DATE CONFIRMED and PLANET X LOCATION

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BREAKING NEWS: NASA CONFIRM NIBIRU ARRIVAL DATE CONFIRMED and PLANET X LOCATION Support me: Please …

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