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sagan.bsky.social
In the Memory of Astronomer, Researcher, Educator, Communicator, Advocate and Activist who taught us importance of understanding Science. We miss you Carl. Tribute account.
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If we continue to accumulate only power and not wisdom, we will surely destroy ourselves... If we become even slightly more violent, shortsighted, ignorant, and selfish than we are now, almost certainly we will have no future. - Carl Sagan

One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones. - Albert Einstein

Think of the endless cruelties visited by the inhabitants of one corner of the dot on scarcely distinguishable inhabitants of some other corner of the dot. How frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds.

Happy Birthday, Ann Druyan! 🎉 Born June 13, 1949, she’s an Emmy and Peabody Award-winning writer, producer, and science communicator who helped shape how millions of us see the cosmos. Let’s take a moment to celebrate her legacy. 🧵

Every thinking person fears nuclear war, and every technological state plans for it. Everyone knows it is madness, and every nation has an excuse. - Carl Sagan, Cosmos

BREAKING🚨: NASA's Voyager Spacecraft Found A 30,000-50,000 Kelvin "Wall" At The Edge Of Our Solar System.

Science is not only compatible with spirituality; it is a profound source of spirituality.

News: Scientists warn Trump’s 2026 budget cuts could shut down the world’s most powerful solar telescope DKIST. The one that recently took the highest-res image of the Sun ever captured.

Carl Sagan was prescient.

Three decades ago, billionaire Ted Turner asked astronomer Carl Sagan if he was a socialist.

"We’re no longer interested in finding out the truth. The bamboozle has captured us. It’s simply too painful to acknowledge, even to ourselves, that we’ve been taken. Once you give a charlatan power over you, you almost never get it back." ~ Carl Sagan

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

You're unlikely to discover something new without a lot of practice on old stuff. - Richard Feynman

Saturn's moon Mimas moving along the planet's vast ring system highway. Credit: NASA Cassini spacecraft (2008)

I promise to question everything my leaders tell me. I promise to use my critical faculties. I promise to develop my independence of thought. I promise to educate myself so I can make my own judgements. - Carl Sagan

Isaac Asimov on, "If God is Dead, Everything is Permitted?"

One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there and don't throw it away. - Stephen Hawking

Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.

Some supermassive black holes lie dormant for years until a star gets too close. A new study reveals 3 rare events where black holes devoured massive stars, unleashing energy surpassing 100 supernovae. They're now classified as extreme nuclear transients. Illustration Credit: NASA/JPL-Caltech

A message from Carl Sagan from 1995—some of his last prophetic words.

I was an ordinary person who studied hard. There are no miracle people. -- R. Feynman

Somewhere, something incredible is waiting to be known.

Carl Sagan wrote this letter to Chuck Berry on the musician's 60th birthday!

"Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The Earth is the only world known so far to harbor life." - Carl Sagan

It is the supreme art of the teacher to awaken joy in creative expression and knowledge. - Albert Einstein

Carl Sagan's 1975 letter to 17 years old Neil deGrasse Tyson.

Books permit us to voyage through time, to tap the wisdom of our ancestors.

Hits hard as always! Are we too bamboozled to see the truth?

You're an interesting species. An interesting mix. You're capable of such beautiful dreams, and such horrible nightmares. You feel so lost, so cut off, so alone, only you're not. See, in all our searching, the only thing we've found that makes the emptiness bearable, is each other.

As always, a beautiful speech from Carl "Man in His Arrogance" by Carl Sagan

Carl Sagan on Religion and God! “We must not believe because we want it to be true.”

We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.

Latest image of the Sun taken today by NASA 🌞

Carl Sagan in 1986 on the problems with media and science literacy.

The universe is a pretty big place. If it's just us, seems like an awful waste of space.

It pays to keep an open mind, but not so open your brains fall out.

Imagination will often carry us to worlds that never were, but without it we go nowhere.

You cannot teach a man anything, you can only help him to find it within himself. Galileo Galilei

We are like butterflies who flutter for a day and think it is forever.

Sir Isaac Newton's 'Trinity College notebook' page written somewhere between 1661 and 1665, when he was an undergraduate at that same college.

Which of Carl Sagan's books do you want to read? #booksky

The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself.