Milky Way
Use attributes for filter ! | |
Stars | 250 billion ± 150 billion |
---|---|
Sun's Galactic rotation period | 240 Myr |
Sun's distance to Galactic Center | 26. 4 ± 1. 0 kly (8. 09 ± 0. 31 kpc) |
Spiral pattern rotation period | 220–360 Myr |
Escape velocity at Sun's position | 550 km/s |
Did you know | It's about 50,000 light-years away from the Milky Way center. |
Episodes | EpisodesE30 · Pillow TimeJun 23, 2021 E29 · Take it EasyJun 22, 2021 E28 · Full MoonJun 22, 2021 View 25+ more |
Date of Reg. | |
Date of Upd. | |
ID | 596611 |
About Milky Way
Babies and toddlers who wake up at night can become irritable and fussy. BabyTV's nighttime programming creates a soothing atmosphere through gently moving visuals, soft colours, and calming music.
Euclid telescope: First images revealed from 'dark Universe' mission
......
Mangrove forests: Steely gaze of young tigress wins photo awards
... Mangroves & Landscape highly commended: Between Ancient and Modern Lights, by Aaron Ruy G Musa, PhilippinesLights from Bais City, the Milky Way and the Lyrid meteor shower [are seen alongside] the mangrove s trees during darkness and low tide...
Northern Lights: England's skies glow in aurora spectacle
... Leah Hennessey waited by Ashness Jetty, near Keswick, to see the Milky Way but was diverted to snapping the Northern Lights when she saw the lights...
James Webb: Telescope reveals new detail in famous supernova
... SN1987A is sited a mere 170,000 light-years from us in the Large Magellanic Cloud, a dwarf galaxy adjacent to our own Milky Way Galaxy...
James Webb telescope image dazzles on science birthday
... Both professional and amateur stargazers like to look at Rho Ophiuchi, which can be found just to one side of the plane of the Milky Way...
Milky Way: Icy observatory reveals 'ghost particles'
... The blurry, extraordinary image is of the Milky Way, but it is composed of the " ghostly" particles that are emitted by the reactions that power stars...
8 Ursae Minoris b: Scientists unlock mystery of planet that escaped death
... The planet - 8 Ursae Minoris b - was identified in 2015 in the Milky Way...
King Charles: Chocolate bust created to celebrate coronation
... Miniature bars of Snickers, Mars, Twix, Milky Way, Galaxy and Bounty were among those used to decorate the model...
Milky Way: Icy observatory reveals 'ghost particles'
By Victoria GillScience correspondent, Bbc News
An astronomical detector buried in Antarctic ice has provided a view of our Galaxy That has never been seen before.
The blurry, extraordinary image is of the Milky Way , But it is composed of the " ghostly" particles That are emitted by the reactions That power stars.
The particles are neutrinos, which are extremely difficult to detect on Earth.
To find them, scientists turned a vast block of Antarctic ice into a detector.
" This is the First Time we're seeing our Galaxy using particles rather than photons [of Light ], " Prof Subir Sarkar from the University of Oxford told Bbc News . This, he explained, provides a view of " High Energy processes That shape our Galaxy".
Neutrinos can be thought of as astronomical messengers That point to those fundamental processes. They are created when particles called cosmic Rays - That are rattling around at near Light Speed - smash into other matter.
Capturing those collisions basically means capturing neutrinos. And That is not easy.
" The neutrino is a ghostly particle; it's basically almost without mass, " explained Prof Sarkar. " They're essentially moving at the Speed of Light and might pass through The Galaxy and not interact with anything. That is why, in order to see them, you need a massive detector. "
The detector That scientists and engineers designed is called. It is composed of thousands of sensors on long cables That are drilled and frozen into a 1km cubic block of ice. The whole array is buried close to the South Pole .
Whenever a neutrino interacts with one of the billions of ice molecules, That interaction is captured.
" Essentially, by knowing which sensor is triggered and at what time, we can reconstruct the direction [That neutrino came from]. "
The Scientists say The Discovery , is an entirely new window on our Galaxy.
Mapping the Milky WayIt is a century since astronomer discovered That the Milky Way was just one of millions of galaxies - That it was our place in a vast Universe.
Prof Naoko Kurahashi Neilson, a physicist at Drexel University in Philadelphia, and another member of the IceCube team, said That humans had been studying it for millennia. " We've seen it in many wavelengths of Light - Like radio waves and gamma Rays - But since The Dawn of time it was always in Electromagnetic Radiation . In all wavelengths of Light or photons. "
" This is The First 'map' of our Galaxy in something [other than Light ], and it's in high-energy neutrinos, " she told Bbc News . " [It will mean] we can start understanding the physical processes in the Milky Way better. "
Prof Kurahashi Neilson added That The Team would spend The Next 5-10 years trying to answer questions That " we can finally ask".
Related TopicsSource of news: bbc.com