Великолепно!
“Can you see that star there, the brightest one?” He was pointing not straight up, but more towards the horizon where a bright, bluish star was flickering. “That’s Sirius,” he said, “nicknamed the Dog Star. It’s a huge sun, bigger than our sun, and it’s 81 trillion kilometres away.”
Now, I don’t know about you but when someone starts talking about numbers like trillions, I kind of glaze over. I can’t even imagine what 81 trillion kilometres is like. As if reading my mind, Dad went on: “That’s eighty-one thousand billion.”
I wasn’t any wiser.
“Or in other words – nearly a million times greater than the distance between our earth and our sun.”
OK – that’s a little bit easier to imagine. Just a bit. I gave Dad’s hand a squeeze to let him know I was sort of following him.
“So, Al: the light from Sirius has taken nearly nine years to travel to earth. Nine years from leaving Sirius to hitting your eyeballs. In other words, you are looking at something that happened nine years ago.”
I gave this time to sink in.
<...>
“To look at the night sky, Al – that’s travelling in time!”
“Can you see that star there, the brightest one?” He was pointing not straight up, but more towards the horizon where a bright, bluish star was flickering. “That’s Sirius,” he said, “nicknamed the Dog Star. It’s a huge sun, bigger than our sun, and it’s 81 trillion kilometres away.”
Now, I don’t know about you but when someone starts talking about numbers like trillions, I kind of glaze over. I can’t even imagine what 81 trillion kilometres is like. As if reading my mind, Dad went on: “That’s eighty-one thousand billion.”
I wasn’t any wiser.
“Or in other words – nearly a million times greater than the distance between our earth and our sun.”
OK – that’s a little bit easier to imagine. Just a bit. I gave Dad’s hand a squeeze to let him know I was sort of following him.
“So, Al: the light from Sirius has taken nearly nine years to travel to earth. Nine years from leaving Sirius to hitting your eyeballs. In other words, you are looking at something that happened nine years ago.”
I gave this time to sink in.
<...>
“To look at the night sky, Al – that’s travelling in time!”
0
У записи 2 лайков,
0 репостов.
0 репостов.
Эту запись оставил(а) на своей стене Polina Revyakina
