Who said we are a way for the universe to know itself?

Carl Sagan
the most powerfull sentence by Carl Sagan from the scientific serie “Cosmos” : “The cosmos is also within us, We’re made of star stuff. We are a way for the cosmos to know itself.”

How do we know about the universe?

“The Hubble Constant sets the scale of the Universe, both its size and its age.” It helps to think about the Universe like a balloon being blown up. As the stars and galaxies, like dots on a balloon’s surface, move apart from each other more quickly, the greater the distance is between them.

How much of the universe do we know about?

So, the stars and galaxies and the conventional matter we observe all around us really only compose 5 percent of what constitutes our universe. Our research has revealed to us deep mysteries about the remaining 95 percent, inspiring the title of tonight’s discussion, “The Universe Is Stranger Than We Thought.”

What did Carl Sagan mean when he said that we are all star stuff?

When Carl Sagan said that “we’re made of star stuff,” he wasn’t being metaphoric. He was simply noting—in his uniquely precise and poetic way—that the raw materials that constitute our physical bodies were forged in the bellies of distant, long-extinguished stars.

Who said we are but stardust?

Joni Mitchell said, “we are stardust, we are golden” and in the workplace we are so much more than “Humans Doing”…we are “Humans Being”, with all the wonderful gifts of our unique person-ness right there for the sharing.

How do we know that the universe is infinite?

To measure the universe, astronomers instead look at its curvature. The geometric curve on large scales of the universe tells us about its overall shape. If the universe is perfectly geometrically flat, then it can be infinite. If it’s curved, like Earth’s surface, then it has finite volume.

Are we really made of star stuff?

Stars that go supernova are responsible for creating many of the elements of the periodic table, including those that make up the human body. ‘It is totally 100\% true: nearly all the elements in the human body were made in a star and many have come through several supernovas. ‘

How is all matter in the universe made up of star stuff?

The process of producing elements inside of stars is called fusion. Through fusion, lighter elements combine to form heavier elements, releasing energy in the process. All of the elements in the universe were made this way and this process continues today.

https://www.youtube.com/watch?v=wLigBYhdUDs