very nice explanation! easy to understand and easy to listen to. Although, the more I learn the more I think we do not have enough evidence to say without a doubt that the universe is expanding at an increasing rate of speed. Thanks to Leavitt's discovery we can measure distance to a star, and thanks to red or blue-shift we can see how fast its moving and in what direction. The stars that are further away are more red shifted more than stars that are closer. But if you consider that light has taken millions and millions of years to get here, so we only know that star was moving that fast that many millions of years ago. Yet the stars closer to us are moving slower and the light we see is 'less old' and less red shifted. To me that only proves the opposite of what we believe right now. Still trying to find the evidence to convince myself.
fantastic job, easy to understand, ty !!!
Love this! Thank you!
Amazing Video!
very nice explanation! easy to understand and easy to listen to.
Although, the more I learn the more I think we do not have enough evidence to say without a doubt that the universe is expanding at an increasing rate of speed. Thanks to Leavitt's discovery we can measure distance to a star, and thanks to red or blue-shift we can see how fast its moving and in what direction. The stars that are further away are more red shifted more than stars that are closer. But if you consider that light has taken millions and millions of years to get here, so we only know that star was moving that fast that many millions of years ago. Yet the stars closer to us are moving slower and the light we see is 'less old' and less red shifted. To me that only proves the opposite of what we believe right now.
Still trying to find the evidence to convince myself.
this is super cool! thank you for sharing!
Glad you enjoyed it!