This video zooms into the barred spiral galaxy NGC 2525, located 70 million light-years away in the southern constellation Puppis. Roughly half the diameter of our Milky Way, it was discovered by British astronomer William Herschel in 1791 as a «spiral nebula.» The sharpness of the image increases as we zoom into the Hubble view. As we approach an outer spiral arm a Hubble time-lapse video is inserted that shows the fading light of supernova 2018gv. Hubble didnt record the initial blast in January 2018, but for nearly one year took consecutive photos, from 2018 to 2019, that have been assembled into a time-lapse sequence. At its peak, the exploding star was as bright as 5 billion Suns.
Credit: NASA, ESA, J. DePasquale (STScI), M. Kornmesser and M. Zamani (ESA/Hubble), A. Riess (STScI/JHU) and the SH0ES team, and the Digitized Sky Survey
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Over the last 30 years, Hubble has taken millions of incredible photos of distant stars and galaxies. But Hubbles best images have come and gone, and the worlds most famous telescope will sadly come to an end in the not-to-distant future. This video looks at how Hubble managed to capture an image of the most distant Galaxy in the known universe, located 32 billion light-years away.
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Если вы хоть раз смотрели на ночное небо в ясную погоду где-нибудь за городом, то вы знаете, насколько это невероятно! Хотя звёзды находятся неприлично далеко от нас (кроме одной), мы всё же научились исследовать их. Поэтому я начала еще одну серию выпусков, которая называется «Звездные истории». Во второй части начинаем разговор о звездной эволюции, о разных видах звезд и о том, как они умирают…
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Книга: Протозвёзды. Где, как и из чего формируются звёзды.
В.Г. Сурдин, С.А. Ламзин
Лекции астрофизика Сергея Попова
Лекции астронома Владимира Сурдина
Лекции астрофизика Сергея Ламзина
Цефеиды: elementy.ru/problems/1338/Tsefeidy
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Thirty years ago on February 24, 1987, observers in the southern hemisphere noticed a new object in the Large Magellanic Cloud. Today, we know this object as Supernova 1987A, and it was one of the brightest supernova seen in hundreds of years. Coupled with its relative proximity at about 160,000 light years from Earth, Supernova 1987A became one of the best opportunities ever for astronomers to study the phases before, during, and after the death of a star.
Since its discovery, telescopes around the world and in space have observed Supernova 1987A. This includes NASA’s Chandra X-ray Observatory, which has looked at this object repeatedly during its 17 years of science operations.
From 1999 until 2013, Chandra data showed an expanding ring of X-ray emission that had been steadily getting brighter. This was produced by the blast wave from the original explosion that had been bursting through and heating the ring of gas surrounding the supernova.
In the past few years, there have been striking changes in the Chandra data. This provides evidence that the explosion’s blast wave has moved beyond the ring into a region with less dense gas. This represents the end of an era for SN 1987A. Since astronomers do not know exactly lies beyond the ring, they will be watching carefully what happens next.
Over the next few thousand years, the expanding shell of hot gas will continue to glow in X rays. Eventually after rumbling across several thousand light years, the shell will disperse. By doing this, the supernova spreads the heavy elements created in the star and possibly triggers the formation of new stars from a cold interstellar cloud. Using data from Chandra and other telescopes, astronomers will continue to learn more about the details of this very important process that is responsible for life as we know it.
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Таймкод выпуска о Провансе:
02:44 Кухня Прованса. Суп Буйабес
09:50 Общение с владельцем школы яхтинга
11:30 Особенности работы телохранителей в Каннах
20:47 Лимонная ферма
22:14 На парфюмерной фабрике в г. Грассе
23:36 На винодельни
32:07 Стоимость обучения
37:09 На фабрике по производстве мыла
41:22 Жизнь пенсионеров в Провансе
Timecode of Provence:
02:44 Provence cuisine. Bouillabaisse soup
09:50 Communication with the owner of the yachting school
11:30 Features of Working as a bodyguard in Cannes
20:47 Lemon Farm
22:14 At the perfume factory in Grasse
23:36 At the winery
32:07 Tuition fees
37:09 At a soap factory
41:22 The life of retirees in Provence
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