What Are Pulsars?

What Are Pulsars?
What Are Pulsars?

What are Pulsars?

Pulsars are spherical, compact objects that are about the size of a large city but contain more mass than the sun. Discovered in 1967, pulsars are fascinating members of the cosmic community.

From Earth, pulsars often look like flickering stars. On and off, on and off, they seem to blink with a regular rhythm. But the light from pulsars does not actually flicker or pulse, and these objects are not actually stars.

Pulsars radiate two steady, narrow beams of light in opposite directions. Although the light from the beam is steady, pulsars appear to flicker because they also spin. It’s the same reason a lighthouse appears to blink when seen by a sailor on the ocean: As the pulsar rotates, the beam of light may sweep across the Earth, then swing out of view, then swing back around again. To an astronomer on the ground, the light goes in and out of view, giving the impression that the pulsar is blinking on and off. The reason a pulsar’s light beam spins around like a lighthouse beam is that the pulsar’s beam of light is typically not aligned with the pulsar’s axis of rotation.

Click here to see the animation

Click here to hear the pulsars sound

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Dialogue Concerning the Two Chief World Systems by Galileo Galilei (1632): “The most proximate cause of Galilei being brought to trial before the Inquisition. Using the dialogue form, a genre common in classical philosophical works, Galileo masterfully demonstrates the truth of the Copernican system over the Ptolemaic one, proving, for the first time, that the earth revolves around the sun. Its influence is incalculable. The Dialogue is not only one of the most important scientific treatises ever written, but a work of supreme clarity, remaining as readable now as when it was first published.” 

The Origin of Species by Charles Darwin: ”The publication of this book in 1859 marked a dramatic turning point in scientific thought. Selling out its first edition on its first day, The Origin of Species revolutionized science, philosophy, and theology. Darwin’s reasoned, documented arguments advance his theory of natural selection and his assertion that species started with a few simple forms that mutated and adapted over time.“ 

A Brief History of Time by Stephen Hawking (1988): “How did the universe begin—and what made its start possible? Does time always flow forward? Is the universe unending? What will happen when it all ends? Told in language we all can understand, A Brief History of Time plunges into the realms of black holes, quarks, antimatter, the big bang and a bigger God. Stephen Hawking brings us closer to the ultimate secrets at the very heart of creation.” 

Cosmos by Carl Sagan (1980): “Cosmos is one of the bestselling science books of all time. Cosmos retraces the fourteen billion years of cosmic evolution that have transformed matter into consciousness, exploring such topics as the origin of life, the human brain, Egyptian hieroglyphics, spacecraft missions, the death of the Sun, and the list goes on.”

Silent Spring by Rachel Carson (1962): “The marine biologist’s documented indictment of DDT led both to a U.S. ban on the insecticide and to the birth of the modern environmental movement. Carson argues that DDT not only indiscriminately kills insects, but also accumulates in the fat of birds and mammals high on the food chain, thinning eggshells and causing reproductive problems.”

Relativity: The Special and General Theory by Albert Einstein (1916): “In the early 20th century, scientists began to interrogate the Newtonian model of Physics that posits absolute time, intrigued by the possibility of a dimension in which space and time overlap. This text is Einstein’s philosophical explanation of the idea that changed the way we understand the physics of space and time.“

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7 years ago

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and din is just standing there visibly seething because that son of a bitch has his kid

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"Hope is like the sun. If you only believe it when you see it, you'll never make it through the night." -Princess Leia

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