A whopping 1,, earths can fit inside the sun. Not that any right-thinking earth would want to do that. Poppy Logo. FB house promo. Sign Up for News Updates. Sign up. Not convinced? Through this continuous random bouncing back and forth no wonder that mathematically this problem is known as random walk , up to a million years after it was born, our photon finally enters the convective zone. Our photon hitches a ride in one of these bubbles up to the visible surface.
The sunlight we see is years and 8. It is ancient! But not to the photons themselves. You see, according to Einstein, the closer to the speed of light you travel , the more the time dilates i. Ultimately, for a photon that travels…well… at the light speed, the fastest speed there is, there is no time and no distance. In other words, photons have no age and they do not experience time. To them, entering your eye happens instantaneously after their birth — no thousands of years of bouncing, no huge distance from the Sun traveled!
Did you enjoy this post? Here are some other cool posts about the Sun. Why white dwarfs crystallize and how the Sun will turn into a giant diamond. Parker Probe: the mission to solve the mystery of the Sun. If you have any questions o comments, do not hesitate to get in touch. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. They start off as gamma radiation and then are emitted and absorbed countless times in the Sun's radiative zone, wandering around inside the massive star before they finally reach the surface.
What you probably don't know, is that these photons striking your eyeballs were ACTUALLY created tens of thousands of years ago and it took that long for them to be emitted by the sun. Once they escaped the surface, it was only a short 8 minutes for those photons to cross the vast distance from the Sun to the Earth.
The light you see from your computer is nanoseconds old. The light reflected from the surface of the Moon takes only a second to reach Earth. The Sun is more than 8 light-minutes away. And so, if the light from the nearest star Alpha Centauri takes more than 4 years to reach us, we're seeing that star 4 years in the past.
There are galaxies millions of light-years away, which means the light we're seeing left the surface of those stars millions of years ago. For example, the galaxy M is located about If aliens lived in those galaxies, and had strong enough telescopes, they would see the Earth as it looked in the past. They might even see dinosaurs walking on the surface. Explore further. More from Astronomy and Astrophysics.
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