reversals in the Earth’s magnetic field tagged posts

Rutgers University-New Brunswick Professor Dennis Kent with part of a 1,700-foot-long rock core through the Chinle Formation in Petrified Forest National Park in Arizona. The background includes boxed archives of cores from the Newark basin that were compared with the Arizona core. Credit: Nick Romanenko/Rutgers University-New Brunswick

Gravity of Jupiter and Venus elongates Earth’s orbit every 405,000 years, Rutgers-led study confirms. Every 405,000 years, gravitational tugs from Jupiter and Venus slightly elongate Earth’s orbit, an amazingly consistent pattern that has influenced our planet’s climate for at least 215 million years and allows scientists to more precisely date geological events like the spread of dinosaurs, according to a Rutgers-led study.

The findings are published onlin...