All articles tagged with #earth climate
UC Riverside planetary astrophysicist Stephen Kane’s simulations show Mars exerts a measurable influence on Earth’s orbital variations and tilt, helping to drive Milankovitch cycles that govern ice-age timing. Removing Mars erases two long cycles (about 100,000 and 2.3 million years), while increasing Mars’ mass shortens them, suggesting outer planets can affect climates on Earth-like worlds.
New simulations show Mars helps set a 2.4-million-year rhythm in Earth’s orbit that paces Milankovitch cycles and influences ice-age timing. By running the solar system with and without Mars, researchers found the red planet’s gravity shapes orbital frequencies and Earth’s tilt; removing Mars erased a key cycle, tying these climate rhythms to planetary dynamics. While greenhouse gases and ocean circulation remain primary drivers of temperature swings, the study connects orbital science to rock records and suggests broader implications for understanding climates on other worlds.
New simulations indicate Mars’ gravity subtly stabilizes Earth’s climate by damping changes in its axial tilt; without Mars, major climate cycles like ice ages could disappear, and increasing Mars’ mass would shorten these cycles—revealing a surprising, system-wide gravitational connection that could affect how we think about habitability in other planetary systems.
New simulations quantify Mars' gravitational influence on Earth, showing Mars helps stabilize Earth's axial tilt and orbital eccentricity over Milankovitch cycles, potentially shaping climate over hundreds of thousands to millions of years; removing Mars from the system causes major cycles to vanish, while increasing Mars' mass dampens tilt changes, suggesting Mars plays a stabilizing role in Earth's climate and could influence how we think about habitable worlds elsewhere.
A 2024 study suggests that millions of years ago, the solar system's passage through a dense interstellar cloud compressed the heliosphere, exposing Earth to cosmic particles, which may have caused climate cooling and influenced human evolution. Future encounters with similar clouds are possible, highlighting the importance of space research.
Research suggests supernovas may have caused significant climate changes on Earth in the past by damaging the ozone layer and affecting greenhouse gases, with potential implications for future events as nearby stars like Betelgeuse go supernova. Evidence from space telescopes and tree rings supports this theory, highlighting the importance of understanding supernova impacts on our planet.