"Planetary Orbits Altered by Passing Stars"

Earth's orbit around the Sun is influenced by passing stars, affecting its climate and complicating paleoclimate studies. The gravitational tugs of stars like HD 7977 can significantly alter Earth's orbit, introducing uncertainties in paleoclimate conclusions. This challenges previous models linking Earth's eccentric orbit to events like the Paleocene-Eocene Thermal Maximum, suggesting that passing stars may have played a more significant role in shaping the planet's climate than previously thought.