We Are NASA
We’ve taken giant leaps and left our mark in the heavens. Now we’re building the next chapter, returning to the Moon to stay, and preparing to go beyond. We are NASA – and after 60 years, we’re just getting started. Special thanks to Mike Rowe for the voiceover work.
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NASA | Massive Black Hole Shreds Passing Star
This artist’s rendering illustrates new findings about a star shredded by a black hole. When a star wanders too close to a black hole, intense tidal forces rip the star apart. In these events, called “tidal disruptions,” some of the stellar debris is flung outward at high speed while the rest falls toward the black hole. This causes a distinct X-ray flare that can last for a few years. NASA’s Chandra X-ray Observatory, Swift Gamma-ray Burst Explorer, and ESA/NASA’s XMM-Newton collected different pieces of this astronomical puzzle in a tidal disruption event called ASASSN-14li, which was found in an optical search by the All-Sky Automated Survey for Supernovae (ASAS-SN) in November 2014. The event occurred near a supermassive black hole estimated to weigh a few million times the mass of the sun in the center of PGC 043234, a galaxy that lies about 290 million light-years away. Astronomers hope to find more events like ASASSN-14li to test theoretical models about how black holes affect their environments.
During the tidal disruption event, filaments containing much of the star's mass fall toward the black hole. Eventually these gaseous filaments merge into a smooth, hot disk glowing brightly in X-rays. As the disk forms, its central region heats up tremendously, which drives a flow of material, called a wind, away from the disk.
Music credit: Encompass by Mark Petrie from Killer Tracks.
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Highlights | South Africa vs Pakistan | ODI
Highlights | South Africa vs Pakistan | ODI
#SAvPAK
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From Pakistan Super League, International T20 and ODI matches
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Match highlights- Durham v Outlaws 2023
Match highlights- Durham v Outlaws 2023
Watch all the key moments from a victorious Vitality Blast
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Highlights - Pakistan vs Australia - ODI
Highlights - Pakistan vs Australia - ODI - PCB
#PAKvAUS
Welcome to Sports Central where we bring you all the highlights, interviews, behind the scenes footage and more from sporting events across Pakistan.
From Pakistan Super League, International T20 and ODI matches,
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Highlights - South Africa vs Pakistan - ODI
Welcome to Sports Central where we bring you all the highlights, interviews, behind the scenes footage and more from sporting events across Pakistan.
From Pakistan Super League, International T20 and ODI matches, hockey and Kabaddi to gaming superstars such as Arslan Ash, Sports Central brings you all the sports related updates under one roof.
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