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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

submitted 7 hours ago • 23 comments

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.

submitted 11 hours ago • 9 comments

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

submitted 13 hours ago • 6 comments

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.

submitted 15 hours ago • 10 comments

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. 🧵

submitted 16 hours ago • 2 comments

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

submitted 19 hours ago • 8 comments

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

submitted 1 day ago • 8 comments

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

submitted 1 day ago • 13 comments

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.

submitted 1 day ago • 5 comments

Carl Sagan was prescient.

submitted 1 day ago • 6 comments

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

submitted 2 days ago • 10 comments

"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

submitted 2 days ago • 10 comments

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.

submitted 2 days ago • 12 comments

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

submitted 2 days ago • 1 comment

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

submitted 2 days ago • 2 comments

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

submitted 2 days ago • 17 comments

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

submitted 2 days ago • 249 comments

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

submitted 2 days ago • 2 comments

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.

submitted 3 days ago • 4 comments

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

submitted 3 days ago • 14 comments

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

submitted 3 days ago • 224 comments

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

submitted 3 days ago • 0 comments

Somewhere, something incredible is waiting to be known.

submitted 4 days ago • 84 comments

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

submitted 4 days ago • 10 comments

"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

submitted 4 days ago • 12 comments

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

submitted 5 days ago • 3 comments

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

submitted 5 days ago • 29 comments

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

submitted 6 days ago • 6 comments

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

submitted 7 days ago • 19 comments

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.

submitted 7 days ago • 5 comments

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

submitted 7 days ago • 48 comments

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

submitted 8 days ago • 30 comments

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.

submitted 8 days ago • 1 comment

Latest image of the Sun taken today by NASA 🌞

submitted 8 days ago • 32 comments

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

submitted 8 days ago • 117 comments

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

submitted 9 days ago • 11 comments

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

submitted 10 days ago • 3 comments

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

submitted 11 days ago • 6 comments

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

submitted 11 days ago • 1 comment

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

submitted 12 days ago • 5 comments

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

submitted 12 days ago • 3 comments

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

submitted 12 days ago • 67 comments

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

submitted 13 days ago • 14 comments