🌌 Get ready for a once-in-a-lifetime event you definitely don’t want to miss. A rare celestial phenomenon is about to light up the night sky, and the best part? You can see it from Earth with your own eyes! 👀✨ Astronomers say this event won’t happen again for decades—or maybe even centuries—so it’s truly special. Whether it’s a comet, a supernova, or a planetary alignment (no spoilers!), it’s going to be a dazzling show. Grab your telescope, a blanket, and some snacks, and make it a night under the stars. 🌟 Don't forget to share the experience with friends or family—it’s a moment worth remembering! Credit:
Supernova: NASA Goddard Photo and Video (NASA Goddard Space Flight Center), CC BY 2.0 https://creativecommons.org/licenses/by/2.0/, https://commons.wikimedia.org/wiki/File:Fermi_Detects_%27Shocking%27_Surprise_from_Supernova%27s_Little_Cousin_-HD_Video-.ogv
CC BY 3.0 https://creativecommons.org/licenses/by/3.0/:
SN1994D: NASA/ESA, The Hubble Key Project Team and The High-Z Supernova Search Team, https://commons.wikimedia.org/wiki/File:SN1994D.jpg
SDOmission2009:
Large Flare, https://commons.wikimedia.org/wiki/File:Large_Flare_and_Coronal_Mass_Ejection_(CME).webm
M2 CME 304, https://commons.wikimedia.org/wiki/File:M2_CME_304_bestcrop.mov.webm
CC BY 4.0 https://creativecommons.org/licenses/by/4.0/:
Artist's impression: ESO/L. Calçada/M. Kornmesser/S.E. de Mink, https://commons.wikimedia.org/wiki/File:Artist%27s_impression_of_the_evolution_of_a_hot_high-mass_binary_star.ogv
Dreamlike Starry Sky: Likai Lin/IAU OAE, https://commons.wikimedia.org/wiki/File:Dreamlike_Starry_Sky_and_Airglow_(ann22042k).jpg
Artist’s animation of a micronova: ESO/L. Calçada, M. Kornmesser, https://www.eso.org/public/videos/eso2207b/ Artist's impression: ESO/M. Kornmesser, https://commons.wikimedia.org/wiki/File:Artist%27s_impression_of_vampire_star.ogv
Hubble views: New supernova image: NASA, ESA, A. Goobar (Stockholm University), and Hubble Heritage
Image of Messier 82: NASA, ESA and the Hubble Heritage Team STScI/AURA).
Acknowledgment: J. Gallagher (University of Wisconsin), M. Mountain (STScI) and P. Puxley (NSF)., https://commons.wikimedia.org/wiki/File:Hubble_views_new_supernova_in_Messier_82.jpg
Betelgeuse captured: ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella, https://commons.wikimedia.org/wiki/File:Betelgeuse_captured_by_ALMA.jpg
ESOcast: ESO, P. Kervella, M. Montargès et al., L. Calçada, Digitized Sky Survey 2. Acknowledgement: E. Pantin, N. Risinger (skysurvey.org) and P. Horálek., https://commons.wikimedia.org/wiki/File:ESOcast_238_Light.webm
NASA, ESA, and E. Wheatley
NASA Goddard
Animation is created by Bright Side.
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For more videos and articles visit:
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This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.
Supernova: NASA Goddard Photo and Video (NASA Goddard Space Flight Center), CC BY 2.0 https://creativecommons.org/licenses/by/2.0/, https://commons.wikimedia.org/wiki/File:Fermi_Detects_%27Shocking%27_Surprise_from_Supernova%27s_Little_Cousin_-HD_Video-.ogv
CC BY 3.0 https://creativecommons.org/licenses/by/3.0/:
SN1994D: NASA/ESA, The Hubble Key Project Team and The High-Z Supernova Search Team, https://commons.wikimedia.org/wiki/File:SN1994D.jpg
SDOmission2009:
Large Flare, https://commons.wikimedia.org/wiki/File:Large_Flare_and_Coronal_Mass_Ejection_(CME).webm
M2 CME 304, https://commons.wikimedia.org/wiki/File:M2_CME_304_bestcrop.mov.webm
CC BY 4.0 https://creativecommons.org/licenses/by/4.0/:
Artist's impression: ESO/L. Calçada/M. Kornmesser/S.E. de Mink, https://commons.wikimedia.org/wiki/File:Artist%27s_impression_of_the_evolution_of_a_hot_high-mass_binary_star.ogv
Dreamlike Starry Sky: Likai Lin/IAU OAE, https://commons.wikimedia.org/wiki/File:Dreamlike_Starry_Sky_and_Airglow_(ann22042k).jpg
Artist’s animation of a micronova: ESO/L. Calçada, M. Kornmesser, https://www.eso.org/public/videos/eso2207b/ Artist's impression: ESO/M. Kornmesser, https://commons.wikimedia.org/wiki/File:Artist%27s_impression_of_vampire_star.ogv
Hubble views: New supernova image: NASA, ESA, A. Goobar (Stockholm University), and Hubble Heritage
Image of Messier 82: NASA, ESA and the Hubble Heritage Team STScI/AURA).
Acknowledgment: J. Gallagher (University of Wisconsin), M. Mountain (STScI) and P. Puxley (NSF)., https://commons.wikimedia.org/wiki/File:Hubble_views_new_supernova_in_Messier_82.jpg
Betelgeuse captured: ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella, https://commons.wikimedia.org/wiki/File:Betelgeuse_captured_by_ALMA.jpg
ESOcast: ESO, P. Kervella, M. Montargès et al., L. Calçada, Digitized Sky Survey 2. Acknowledgement: E. Pantin, N. Risinger (skysurvey.org) and P. Horálek., https://commons.wikimedia.org/wiki/File:ESOcast_238_Light.webm
NASA, ESA, and E. Wheatley
NASA Goddard
Animation is created by Bright Side.
----------------------------------------------------------------------------------------
Music from TheSoul Sound: https://thesoul-sound.com/
Check our Bright Side podcast on Spotify and leave a positive review! https://open.spotify.com/show/0hUkPxD34jRLrMrJux4VxV
Subscribe to Bright Side: https://goo.gl/rQTJZz
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Our Social Media:
Facebook: https://www.facebook.com/brightside
Instagram: https://www.instagram.com/brightside.official
TikTok: https://www.tiktok.com/@brightside.official?lang=en
Stock materials (photos, footages and other):
https://www.depositphotos.com
https://www.shutterstock.com
https://www.eastnews.ru
----------------------------------------------------------------------------------------
For more videos and articles visit:
http://www.brightside.me
----------------------------------------------------------------------------------------
This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.
Category
😹
FunTranscript
00:00So, this year, before September, a star in the constellation of Corona Borealis will
00:06explode, and in the Northern Hemisphere, we'll be able to see it with the unaided eye.
00:11This star is T. Corona Borealis, a white dwarf star 3,000 light-years away from our Solar
00:17System.
00:18It will turn into a nova, which we'll discuss a bit later, in spring or summer.
00:23Even though this occurrence is predictable, happening every 80 years, it's still a once-in-a-lifetime
00:28event, if you're human.
00:31T. Corona Borealis is not your regular star.
00:34It's actually a binary, two stars orbiting each other.
00:37This pair, though, is incredibly special.
00:40Occasionally, the stars increase their brightness to such an extent that they become visible
00:45on Earth.
00:46The white dwarf star is the more massive one of the two.
00:49But the most shocking thing about it is that it might pack the same mass as the Sun into
00:54a volume only as large as Earth.
00:57The companion star, an aging red giant, has already expanded so much that it's dumping
01:02its material onto the white dwarf.
01:05So it's time for another explosion for these two.
01:07It's going to take the star's brightness from magnitude 11 to magnitude 2.
01:13You see, in astronomy, magnitude is used to measure the brightness of a star or another
01:17celestial object.
01:18The brighter it is, the lower the number assigned as a magnitude is.
01:22It's like golf.
01:23Low scores, you know.
01:25In our case, it means that we'll be able to see the star with the unaided eye, even
01:29in light-polluted skies.
01:32We can only see the binary with binoculars in a completely dark sky.
01:37After the outburst, T Corona Borealis will remain the brightest star in the constellation
01:41of Corona Borealis for a few days before gradually dimming.
01:47This event shouldn't be confused with a supernova.
01:50In a supernova, a star's core collapses, which leads to its complete destruction.
01:55It can only happen to a star 8 times the mass of the Sun.
01:59Instead of disappearing in a blinding flash of light forever, T Corona Borealis will experience
02:04a nova, an explosion on its surface, flinging matter into space but not ruining the star
02:10itself.
02:12Such recurrent novas happen at regular intervals.
02:15T Corona Borealis was known to astronomers from the past as the blaze star.
02:20This time, it exploded in 1866 and 1946.
02:25Astronomers from NASA believe it's going to do it again before September this year.
02:30The constellation of Corona Borealis, also known as the Northern Crown, is one of the
02:35most beautiful out there.
02:36It's a curved semicircle of 7 stars, which is easy to find in April.
02:41You should go outside 2 hours after dark and look to the east-northeast.
02:46Once you find the Big Dipper, use the curve of its handle to go to Arcturus, finding the
02:52bright star in the Buddhist constellation due east.
02:55If you go diagonally down to the east-northeast horizon, you'll spot Corona Borealis.
03:02If you want to observe the brightening of T Corona Borealis, it might be better if you
03:06get acquainted with the region and the stars of the constellation it's in.
03:10Once the event begins, you'll be able to compare its brightness against the other stars
03:14and observe the thing without using any fancy cameras.
03:17Now, a nova is a short-lived sudden explosion involving a compact star as large as Earth
03:23or a bit bigger.
03:25The outburst comes from a white dwarf circling remarkably close to a regular star, so close
03:31that a stream of gas flows between them.
03:34This gas starts piling up until it creates a layer on the white dwarf's surface, and
03:39then it reaches a point where it detonates in a runaway thermonuclear explosion.
03:44According to astronomers, around 50 nova happen every year in our galaxy, but not all of them
03:50are noticed.
03:52NASA's Fermi Gamma-ray Space Telescope has observed several nova that occurred not far
03:58on the scale of the Universe.
04:00They found out that each blast produces gamma rays.
04:04Those are the most energetic forms of light.
04:07Astronomers also think that these gamma rays result from collisions among numerous shock
04:11waves, racing from the explosion site in a quickly expanding shell of debris.
04:16Now, after we've talked about nova, it's time to discuss something much more dramatic – supernovae.
04:23It's the largest explosion humans have ever seen.
04:26Each blast is a super-powerful burst of a star.
04:30One kind of supernova is caused by the last hurrah of an extinguishing massive star.
04:35It happens to stars at least 5 times the mass of our Sun.
04:39Once they near the end of their lives, they go out with a ginormous bang.
04:45Huge stars burn incredible amounts of nuclear fuel at their core, producing tons of energy.
04:51It makes their centers immensely hot.
04:53Heat generates pressure, and this pressure keeps such stars from collapsing.
04:57But any star is in balance between two opposite forces.
05:01Its gravity attempts to squeeze the star into a teeny-tiny ball, and the nuclear fuel
05:07burning at the core of the star produces powerful outward pressure.
05:11Now, when a giant star is running out of fuel, it starts cooling off.
05:16Its pressure drops, and gravity wins.
05:18The star collapses.
05:20An enormous object that is millions of times the mass of Earth collapses within 15 seconds.
05:27No wonder this brisk process produces enormous shockwaves.
05:31It makes the outer layers of the star explode.
05:34Eventually, an incredibly dense core is all that is left behind, besides a growing cloud
05:39of hot gas called a nebula.
05:42A black hole, the densest object in the Universe, is the result of a supernova of a star around
05:4810 times as massive as our Sun.
05:50Also, there's another type of supernova.
05:54It usually happens in systems where two stars orbit each other, and at least one of these
05:58stars is a white dwarf the size of our planet.
06:01If such a star collides with another, or pulls too much matter from its neighbor, it can
06:06explode into a supernova.
06:08Also, supernovae are often so bright, they can outshine the combined light of entire
06:14galaxies for several days or even months.
06:18Supernovae aren't common.
06:19Astronomers think just a few of them occur within the century in galaxies like our home
06:23Milky Way.
06:25But since the Universe contains an enormous number of galaxies, we can observe a few hundred
06:30supernovae every year outside our galaxy.
06:33Unfortunately, space dust blocks our view of most supernovae happening within the Milky
06:39Way.
06:40Betelgeuse, a late-stage red giant, exploded in 2019, but it wasn't the event we expected
06:46to see.
06:47This star is found in the constellation of Orion and is huge, so big that if we moved
06:53it to the center of our Solar System, its outer edge would go way beyond the orbit of
06:58Jupiter.
06:59When Betelgeuse eventually nears its end, it will explode in a stunningly bright supernova
07:04visible on Earth even during the day.
07:07This explosion could happen as soon as tomorrow, or as far-flung as hundreds of thousands of
07:12years from now, so don't hold your breath.
07:15But then, what was it in 2019?
07:19Astronomers noticed that the star was dimming.
07:21They decided it was the initial stages of the grand show.
07:24But instead, Betelgeuse went back to normal over the course of the next few months.
07:30Further analysis revealed that the star hadn't dimmed.
07:33It just looked like that because we had been observing it through a cloud of stellar debris.
07:39At the same time, the amount of light in the photosphere of Betelgeuse ramped up.
07:43It was like a massive explosion of material from the surface of the star.
07:48Events like this occur on the Sun all the time, especially when our star's activity
07:52is high.
07:53Bits of the Sun's surface get tangled up and cast off.
07:57That's what we call coronal mass ejections.
08:00They don't harm our planet, but they can mess with satellites and electrical equipment.
08:06Getting back to Betelgeuse, we've never seen such a huge mass ejection on the surface of
08:10a star before.
08:12It's a new phenomenon which we can observe directly and even see surface details with
08:16the help of the Hubble telescope.
08:19Astronomers say we're watching stellar evolution as it happens for the first time.
08:25That's it for today, so hey, if you pacified your curiosity, then give the video a like
08:30and share it with your friends.
08:31Or if you want more, just click on these videos and stay on the Bright Side!