What If Our Sun Was A Blue Supergiant?

What would a blue sun do to a human?


It would make regular humans dead.

A blue star radiates most of it’s energy in the ultraviolet end of the spectrum.

Light in those frequencies have a terrible tendency to give ordinary humans cancer and radiation poisoning..

Could humans live with a blue sun?

A yellow-white star like our Sun has a surface temperature about 5500ºC, but a blue star can get up into the tens of thousands of degrees. A planet in a 1 AU orbit around a blue star would be far too hot for life as we know it. … A planet in a 1 AU orbit around a blue star would be far too hot for life as we know it.

What is the hottest star color?

Blue starsWhite stars are hotter than red and yellow. Blue stars are the hottest stars of all.

Which is hotter red giant or blue dwarf?

Red Dwarf Stars are amongst the coolest stars in the universe along with brown dwarf stars. When a red dwarf star turns to blue, they become much hotter than they were when they were younger. You might see on some H.R.

Would a supernova kill us?

Risk by supernova type Although they would be spectacular to look at, were these “predictable” supernovae to occur, they are thought to have little potential to affect Earth. It is estimated that a Type II supernova closer than eight parsecs (26 light-years) would destroy more than half of the Earth’s ozone layer.

What if our sun was a black hole?

Even if the Sun somehow converted into a black hole without the initial expansion, explosion and, inevitably, mass loss that normally accompany such transformation, a solar mass black hole will still be tiny! Black holes are about mass squeezed into a point of infinite density, called singularity.

How hot is the blue giant?

20,000 – 50,000 degrees CelsiusBlue supergiants are supergiant stars (class I) of spectral type O. They are extremely hot and bright, with surface temperatures of between 20,000 – 50,000 degrees Celsius.

Why is the sun blue?

As the white light from the Sun enters Earth’s atmosphere, much of the red, yellow, and green wavelengths of light (mixed together and still nearly white) pass straight through the atmosphere to our eyes. … The scattered violet and blue light dominates the sky, making it appear blue.

What does Blue Sun mean?

Blue sun may refer to: A star with a suitable spectral type O.

Does Blue Sun exist?

What if we had a blue sun? … Though the sun may appear yellow or reddish to the naked eye, it’s actually an ordinary white star. And the blue version released by NASA was made using a specific wavelength of ultraviolet light known as CaK, which is emitted by ionized calcium in the sun’s atmosphere.

How would life on Earth be different if the sun was a supergiant?

The increased luminosity would boil away the oceans, vaporize the ice caps and glaciers, and would bake all life from the surface of the Planet – in other words turning Earth into Venus only much worse – it may even turn Earth into Mercury.

Will the sun become a Blue Giant?

A middle-sized star like our Sun might last for 12 billion years, while a blue supergiant will detonate with a few hundred million years. The smaller stars will leave neutron stars or black holes behind, while the largest will just vaporize themselves completely.

What color would the sky be if the sun was blue?

bluerIf the sun became blue with the same luminosity, the sky would just be bluer. The current blue sky is due to rayleigh scattering, which removes most of the light except blue.

Is a Blue Sun Real?

When the Sun is high in the sky, the shorter waves, primarily the blue, strike air molecues in the upper atmosphere and bounce around and scatter. Hence explaining why the sky looks blue. Some people think that enough blue light is scattered out in the Earth’s atmosphere to cause the Sun to appear slightly yellow.

How do blue giants die?

The Death of Blue Supergiants As we mentioned above, supergiants will eventually die as supernovae. When they do, the final stage of their evolution can be as a neutron star (pulsar) or black hole. Supernova explosions also leave behind beautiful clouds of gas and dust, called supernova remnants.

Is the sun getting brighter 2020?

The Sun is becoming increasingly hotter (or more luminous) with time. … Astronomers estimate that the Sun’s luminosity will increase by about 6% every billion years. This increase might seem slight, but it will render Earth inhospitable to life in about 1.1 billion years. The planet will be too hot to support life.

How fast would we die if the sun went out?

You might be able to survive for a bit longer than you think. If the sun suddenly blinked out of existence, you’d have nothing to worry about — for the first eight minutes, anyway. After that, all hell would likely break loose. Still, it wouldn’t be the instantaneous end to life on Earth that you might think.

What if our sun was a blue giant?

Red stars have temperature around 2000- 3000K and blue stars around 10000–20000K. So imagine if sun would be a blue star, it would be so hot that it would become nearly impossible for a planet at a distance as earth to sustain life.

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