"Blue stars are very massive stars, massive stars don't live very long... so if you see blue stars, you know that they've been recently formed."
"A neutron star is formed when a massive star between 10 times and 29 times the mass of our Sun reaches the end of its life and explodes."
"Star clusters really allowed us to get a handle on how stars go through their lives, how they live and die."
"Black holes come from the remains of large stars that exploded in a supernova."
"The jwst will help us see how stars are born and how they die."
"Our Sun will ultimately become a white dwarf."
"Supernova 1054 and its remnants continue to provide valuable data for scientists studying stellar evolution."
"Supernovae occur either when a very massive star has reached the end of its energy generating cycle or when the interactions of binary stars lead to unmitigated thermal nuclear reactions."
"Neutron stars: products of explosions, born from once large stars."
"The life and death stories of stars are fictional." - Arthur Eddington
"The planet is so old that its two parent stars have had enough time to evolve into a white dwarf and a pulsar, making almost 100 revolutions per second."
"The sun will grow bigger until it becomes a red giant... cooking the planets closer to it."
"The term 'Stellar evolution' in astronomy refers to the sequence of changes that a star goes throughout its entire life."
"The final end state would be a star that is completely converted itself from hydrogen into helium and it becomes a helium white dwarf."
"Population 3 stars could have got a lot bigger than Stars today and the larger and heavier the star you have the faster it has to fuse its hydrogen as fuel to counteract the gravity pulling it in."
"Beetlejuice could be the next star in the galaxy to go supernova."
"Once the center of one of these clouds reaches 10 million degrees Kelvin, it'll suddenly ignite, creating a process known as nuclear fusion."
"One of the ways you can extend [the Sun’s] life is by removing non-hydrogen elements from a star and that’s where mining a star’s atmosphere, called starlifting, comes into play."
"In one of our previous videos on Stellar Evolution, we've mentioned that it is mainly this gas that fuels thermonuclear reactions."
"The high mass stars will quickly fuse hydrogen to helium quickly fuse helium to carbon and oxygen."
"The more massive the star, the faster it rushes along its track and the higher up it ends on the main sequence."
"Stars like the Sun unfortunately never fused beyond carbon and nitrogen."
"Stars create heavier elements through nuclear fusion."
"When the materials are made inside of the white dwarf, catastrophic supernovae, those things happen quickly and rapidly."
"Astronomers studying Betelgeuse suggest it's much more evolved than previously thought and will explode in a supernova any century or possibly any decade now."
"The Sun will eventually swell into what's known as a red giant."
"The Sun is about four and a half billion years into its life of approximately 11 billion or 11 1/2 billion years."
"The Sun will expand at roughly the same luminosity and it'll become a red giant."
"Sirius B is actually a white dwarf, which is what our Sun will become one day."
"It all starts with hydrogen, the lightest element, which fuses to form helium, which then fuses to create carbon, oxygen, and progressively heavier elements."
"Elliptical galaxies appear as large, more or less elongated balls of relatively old stars."
"Stars are born with hydrogen and helium, and they start fusing and they work their way up the periodic table in mass."
"This theory of quantum chromodynamics plays an important role in how the nuclei are created, which are important for life, how stars form, and how stars explode."
"More stars means more star birth and more star death, which means more stars have created heavier elements in their course through fusion and then expelled them into the universe."
"The life cycle of a star... what happens to a star when it runs out of fuel."
"If a star runs out of fuel, depending on its size, it turns into what we call a red giant."
"Fomalhaut is an early type star, so it doesn't have too long of a lifetime."
"I'm looking at the beginning and end of a star's life, so I'm looking at how stars are born in nearby galaxies and how stars die."
"The existence of zombie stars has significant implications for our understanding of stellar evolution and the diversity of supernova mechanisms."
"The mass of a star is the principal determinant of its life cycle, dictating not only how the star lives but also how it dies."
"When a massive star runs out of fuel, the core does collapse, crushing every proton and electron into a neutron."
"Approximately 20% of these yellow balls will then turn into really massive stars, whereas about 80% of them will actually become a collection of much smaller stars."
"These super massive stars, these are the ones that become black holes."
"All this stuff was formed inside stars and inside the exploding stars primarily."
"For most of a star's life, it's in what we call the main sequence."
"The core will collapse, outer layers will be released as they cool and expand, resulting in a nebula."
"There's iron in your blood... and they came from generations of stars that lived and died before the Sun was formed."
"As the most massive stars die off and turn into supernova, you're only left with the redder, cooler stars, lower mass stars."
"For a star that is more massive than a sun, it becomes a red supergiant."
"So remember: it goes main sequence, it becomes a red giant, then it becomes a white dwarf, and eventually, it becomes a black dwarf, and that's the end of it."
"If it's still a very big star but not super huge, it will become a neutron star, a star that's made entirely out of neutrons."
"...dying low-mass stars synthesize elements throughout their lifetime but also even after the end of their life they are still in some situations capable of making even more elements."
"The less mass of the star is, the less fuel it might seem to have, the longer it lives."
"The distribution you see traces the life cycle of a star, traces stellar evolution."
"Stars that are massive enough to produce supernovas sometimes become black holes."