Tim Coulson
👤 PersonAppearances Over Time
Podcast Appearances
even if an intelligent uh species on another planet had heard us and set off it's going to take them you know decades if not hundreds or thousands of years to get here so it takes like 26 000 years to get to the center of our galaxy and that's moving at the the universe's speed limit so unless we can come up with ways of traveling around the universe perhaps you know through
Thinking about kind of Star Trek and kind of in science fiction here through worms hole it her wormholes in space it's going to be very difficult for organ it for Intelligent aliens and other planets to get here and we've only been sending out signals to them for 120 years which is when Marconi sent his first radio signal out so if they're listening to that and they were say there were 60 light years away They would have heard that
Thinking about kind of Star Trek and kind of in science fiction here through worms hole it her wormholes in space it's going to be very difficult for organ it for Intelligent aliens and other planets to get here and we've only been sending out signals to them for 120 years which is when Marconi sent his first radio signal out so if they're listening to that and they were say there were 60 light years away They would have heard that
Thinking about kind of Star Trek and kind of in science fiction here through worms hole it her wormholes in space it's going to be very difficult for organ it for Intelligent aliens and other planets to get here and we've only been sending out signals to them for 120 years which is when Marconi sent his first radio signal out so if they're listening to that and they were say there were 60 light years away They would have heard that
If they sent a signal back to us, we would only be receiving it about now. And they would have to be within 60 light years, so 60 to get to them and 60 to get a message back. And there's only about 3,000 stars within 60 light years of Earth, which is a tiny number compared to the stars in the universe.
If they sent a signal back to us, we would only be receiving it about now. And they would have to be within 60 light years, so 60 to get to them and 60 to get a message back. And there's only about 3,000 stars within 60 light years of Earth, which is a tiny number compared to the stars in the universe.
If they sent a signal back to us, we would only be receiving it about now. And they would have to be within 60 light years, so 60 to get to them and 60 to get a message back. And there's only about 3,000 stars within 60 light years of Earth, which is a tiny number compared to the stars in the universe.
So it's possible there's intelligent aliens making their way to us now, but they're probably not going to arrive for a while.
So it's possible there's intelligent aliens making their way to us now, but they're probably not going to arrive for a while.
So it's possible there's intelligent aliens making their way to us now, but they're probably not going to arrive for a while.
So I think one of the things that I was really amazed at, I didn't know, is our moon is getting further away. So with each orbit, it goes around the Earth. it gets a little bit further away.
So I think one of the things that I was really amazed at, I didn't know, is our moon is getting further away. So with each orbit, it goes around the Earth. it gets a little bit further away.
So I think one of the things that I was really amazed at, I didn't know, is our moon is getting further away. So with each orbit, it goes around the Earth. it gets a little bit further away.
And so when it formed, and this is another fascinating fact, when the moon formed, when the young Earth, when it was about nearly about four and a half billion years ago, it collided with another planet that's been called Theta. And that melted the surface of our young planet, it threw a huge amount of debris up into space and that accreted to form the moon.
And so when it formed, and this is another fascinating fact, when the moon formed, when the young Earth, when it was about nearly about four and a half billion years ago, it collided with another planet that's been called Theta. And that melted the surface of our young planet, it threw a huge amount of debris up into space and that accreted to form the moon.
And so when it formed, and this is another fascinating fact, when the moon formed, when the young Earth, when it was about nearly about four and a half billion years ago, it collided with another planet that's been called Theta. And that melted the surface of our young planet, it threw a huge amount of debris up into space and that accreted to form the moon.
So it came together under gravity to form the moon. But the collision also formed the first atmosphere. And without that atmosphere, life probably would never have got going. So we probably owe our... Well, we do owe our existence to a collision that formed the moon. But also, over the course of time that life's been here, there have been all sorts of great extinctions when
So it came together under gravity to form the moon. But the collision also formed the first atmosphere. And without that atmosphere, life probably would never have got going. So we probably owe our... Well, we do owe our existence to a collision that formed the moon. But also, over the course of time that life's been here, there have been all sorts of great extinctions when
So it came together under gravity to form the moon. But the collision also formed the first atmosphere. And without that atmosphere, life probably would never have got going. So we probably owe our... Well, we do owe our existence to a collision that formed the moon. But also, over the course of time that life's been here, there have been all sorts of great extinctions when
when A, the dinosaurs died, and then at the end of the Permian, nearly 300 million years ago, there was a mass extinction that killed over 85% of organisms in the sea and over 70% on land. And if these violent events hadn't happened and these great extinctions hadn't happened, we wouldn't be here and mammals wouldn't have been here. So I think that's one of the amazing things. But what's truly...