“As a gas of normal matter pulls together-or, rather, falls together-it transforms gravitational potential energy into thermal energy. In other words, it heats up. That sets in motion a competition between gravity workimg to condense matter and thermal-energy pressure spreading… — Caleb Scharf Copy Share Image
“If you were a hapless cosmic hitchhiker stranded between the stars of the Milky Way, your body would represent a concentration of matter a… — Caleb Scharf Copy Share Image
“In powers of ten, humans exist almost halfway between the inconceivably big and the unimaginably tiny, and the final plunge from 10^-19 meters to… — Caleb Scharf Copy Share Image
“The most distant quasars exist in a very young universe, barely a billion years old.” — Caleb Scharf Copy Share Image
“We've been around for the tiniest sliver of cosmic time, yet our science can already take us across sixty orders of magnitude in scale.… — Caleb Scharf Copy Share Image
“There are underlying principles at play in nature, from the fields, quanta, and forces of the universe to the ebb and flow of complexity,… — Caleb Scharf Copy Share Image
“We are accelerating and extending our minds through our computers and algorithms, through our medical prowess and our accumulated knowledge. These minds of ours… — Caleb Scharf Copy Share Image
“Remarkably,on the journey from 10^27 meters to 10^23 meters, in just five factors of ten we transition down from the size of the observable… — Caleb Scharf Copy Share Image
“The gloriously bright daytime side of the Earth is therefore not just a pretty sight. It signals a relentless absorption of electromagnetic radiation. Earth… — Caleb Scharf Copy Share Image
“The length of all DNA in your body's cells is 74 billion kilometers (or 193,000 times the distance from the earth to the moon).” — Caleb Scharf Copy Share Image
“Our biological awareness seldom strays below a few millimeters or above a few kilometers. That is 6 orders of magnitude out of some 62.” — Caleb Scharf Copy Share Image
“With enough infalling matter, a spinning black hole can convert mass to energy with higher efficiency than even nuclear fusion. The most luminous cases… — Caleb Scharf Copy Share Image
