Blue Hypergiants: The Brightest Stars That Burn Out Fastest

Comments · 9

• DA

  @Dante3025 · 48 minutes ago

  Love your channel

• ED

  @edgartokman4898 · 1 month ago

  Hypergiants&apos; luminosities are several million times that of the sun. (Luminosity is on the vertical axis of the Hertzsprung-Russell diagrams, on a logarithmic scale. Hypergiants are at the very top -- the most highly luminous stars. Note that these luminosities are in visible light only; for this purpose we&apos;re more interested in the total power output over the whole EM spectrum, which is &quot;bolometric&quot; luminosity. It&apos;s not the same, because stars at different temperatures can emit most of their light outside of the visible wavelengths, i.e. infrared or ultraviolet).<br><br>So to have a habitable planet like Earth, we&apos;d need to have a similar planet temperature. We get about 1,300 watts per square meter from the sun; this is (mainly) what determines our planet&apos;s temperature, how much power we get from the star. If our star were a hypergiant, producing say 106 times more power, we&apos;d need to be 103 further away to get the same areal power, to be at the same temperature. I.e. the habitable orbit around a hypergiant would be at about 1,000 au, about 20x further than Pluto&apos;s orbit (or similar to the predicted Planet 9).<br><br>However, there&apos;s no way for such a planet to exist. The brighter a star, in general the shorter its lifespan; for hypergiants this is only a few million years (Earth is ~4 billion years old). This isn&apos;t enough time for a planet to form, and cool down from its initial, molten-lava temperatures. Long before any realistic life could form, the hypergiant star would explode in a supernova, and the planet would be vaporized.

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• AL

  @albertomarino242 · 2 months ago

  And no living person will ever see it happen…

• PE

  @PetsAnimals2027 · 2 months ago

  Vậy tại sao lại có những ngày nhiều sao và ít sao v

• JO

  @JohnSmith-fl6qd · 2 months ago

  Quick Instant suntans😅

• JO

  @joseph-mariopelerin7028 · 1 day ago

  Could you use less word? It’s annoying when every single quality possible is used… not frustrating not infuriating it’s just numbing…<br><br>when you do it not 4 time not 5 time but 6 times or more every hours it gets like a robot…<br><br>Are you catching not my breath <br> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; not my shade<br>Are you catching my drift?

• JO

  @JohnSmith-fl6qd · 2 months ago

  I&apos;m just wondering. At the center of a black hole, where pressure and temperatures are probably way higher than even in the core of a blue supergiant. Does Fusion occur??