John Moffat: Matter

John Moffat is British-Canadian physicist. Explore interesting quotes on matter.
John Moffat: 44   quotes 0   likes

“Hunting for elusive dark matter is now a multibillion dollar international scientific industry.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 4, Dark Matter, p. 75

“It is hard to understand how this infinitely dense singularity can evaporate into nothing. For matter inside the black hole leak out into the universe requires that it travel faster than the speed of light.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 5, Conventional Black Holes, p. 85

Travel , Understanding , Light , Universe

“Almost 30 percent of the total matter-energy budget is said to be composed of so-called cold dark matter and almost 70 percent of "dark energy," leaving only about 4 percent as visible matter in the form of the atoms that make up the stars, planets, interstellar dust, and ourselves. Such is the degree of discrepancy between theory and observations today.”

John Moffat book Reinventing Gravity

Prologue, The Elusive Planet Vulcan, A Parable, p. 5
Reinventing Gravity (2008)

Star

“It may be that ultimately the search for dark matter will turn out to be the most expensive and largest null result experiment since the Michelson-Morely experiment, which failed to detect the ether.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 4, Dark Matter, p. 77

Search

“Today, like the elusive planet Vulcan in the nineteenth century, dark matter is accepted by the majority of astronomers and physicists as actually existing. Dark matter, although it has never been seen, is part of the generally accepted standard model of physics and cosmology, which also includes the big bang beginning of the universe.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 4, Dark Matter, p. 69

Universe , Parting

“To physicists such as myself, the huge amount of invisible dark matter needed to make Einstein's theory fit the astrophysical data is reason enough for exploring modified gravity theories.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 9, Other Alternative Gravity Theories, p. 143

“It is difficult to falsify the hypothesis of dark matter, because, as with Ptolemy's epicycles, true believers can always add additional arbitrary features and free parameters to overcome any conceivable difficulties that occur with the dark matter models.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 10, Modified Gravity (MOG), p. 163-164

“In estimating the amount of dark matter, cosmologists developing the standard model have to make some rather strong assumptions about their observations.”

John Moffat book Reinventing Gravity

Source: Reinventing Gravity (2008), Chapter 7, New Cosmological Data, p. 120

Strong