Jupiter effect
Encyclopedia
The Jupiter Effect was a best-selling book by John Gribbin
, Ph.D.
, and Stephen Plagemann (pub. 1974) that predicted that an alignment of the planets of the solar system
would create a number of catastrophes, including a great earthquake on the San Andreas Fault
, on March 10, 1982. The predicted catastrophes did not occur.
s on that date, when Mercury
, Venus
, Earth
, Mars
, Jupiter
, Saturn
, and Pluto
would be on the same side of the Sun
, within an arc 95 degrees wide. But no effect could be expected as the gravitational effect of the other planets on the Earth's crust is minimal even at their closest approach. In this book, the authors sought to partially sidestep these objections by considering the effect of the alignment on the Sun, and hence on the solar wind, which in turn is known to affect weather on the Earth. Atmospheric conditions on the Earth can alter the speed of its rotation. The effect on the Sun would also be quite small, however, and in fact there had been an even closer alignment in the year 1128 without any incident.
There was some influence by the planets mentioned above, with the high tide
s calculated as being about 40 micrometer
s higher than normal. In April 1982, Gribbin and Plagemann published a lesser-selling book, The Jupiter Effect Reconsidered. In it they theorized that the effect had actually taken place in 1980, despite the lack of planetary alignment then, and that had triggered the volcanic eruption of Mount St. Helens
.
In his book, The Little Book of Science (pub. 1999), Dr. Gribbin admitted about his "Jupiter Effect" theory "...I don't like it, and I'm sorry I ever had anything to do with it."
John Gribbin
John R. Gribbin is a British science writer and a visiting Fellow in astronomy at the University of Sussex.- Biography :John Gribbin graduated with his bachelor's degree in physics from the University of Sussex in 1966. Gribbin then earned his master of science degree in astronomy in 1967, also...
, Ph.D.
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...
, and Stephen Plagemann (pub. 1974) that predicted that an alignment of the planets of the solar system
Solar System
The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...
would create a number of catastrophes, including a great earthquake on the San Andreas Fault
San Andreas Fault
The San Andreas Fault is a continental strike-slip fault that runs a length of roughly through California in the United States. The fault's motion is right-lateral strike-slip...
, on March 10, 1982. The predicted catastrophes did not occur.
History
Astronomers had long been aware that there would be an alignment of the planetPlanet
A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...
s on that date, when Mercury
Mercury (planet)
Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...
, Venus
Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...
, Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
, Mars
Mars
Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...
, Jupiter
Jupiter
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...
, Saturn
Saturn
Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus , the Babylonian Ninurta and the Hindu Shani. Saturn's astronomical symbol represents the Roman god's sickle.Saturn,...
, and Pluto
Pluto
Pluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System and the tenth-most-massive body observed directly orbiting the Sun...
would be on the same side of the Sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
, within an arc 95 degrees wide. But no effect could be expected as the gravitational effect of the other planets on the Earth's crust is minimal even at their closest approach. In this book, the authors sought to partially sidestep these objections by considering the effect of the alignment on the Sun, and hence on the solar wind, which in turn is known to affect weather on the Earth. Atmospheric conditions on the Earth can alter the speed of its rotation. The effect on the Sun would also be quite small, however, and in fact there had been an even closer alignment in the year 1128 without any incident.
There was some influence by the planets mentioned above, with the high tide
High Tide
High Tide was a band formed in 1969 by Tony Hill , Simon House , Peter Pavli and Roger Hadden .-History:...
s calculated as being about 40 micrometer
Micrometer
A micrometer , sometimes known as a micrometer screw gauge, is a device incorporating a calibrated screw used widely for precise measurement of small distances in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier,...
s higher than normal. In April 1982, Gribbin and Plagemann published a lesser-selling book, The Jupiter Effect Reconsidered. In it they theorized that the effect had actually taken place in 1980, despite the lack of planetary alignment then, and that had triggered the volcanic eruption of Mount St. Helens
Mount St. Helens
Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is south of Seattle, Washington and northeast of Portland, Oregon. Mount St. Helens takes its English name from the British diplomat Lord St Helens, a...
.
In his book, The Little Book of Science (pub. 1999), Dr. Gribbin admitted about his "Jupiter Effect" theory "...I don't like it, and I'm sorry I ever had anything to do with it."