All articles tagged with #inner solar system
A new ETH Zurich study analyzing 10 isotope systems in meteorites and Earth argues that Earth's building blocks came almost entirely from the inner Solar System, with Jupiter acting as a barrier to outer-material mixing; Earth’s composition aligns with Mars and the asteroid Vesta, suggesting a local origin for several planets, though the source of Earth's water remains unresolved and will be a focus of future work.
A new analysis of ten isotope systems in meteorites shows Earth's building blocks came exclusively from the inner Solar System, with outer-Solar-System material contributing less than 2% of Earth's mass and possibly none at all. Jupiter's gravity likely formed a barrier that prevented material exchange between the inner and outer Solar System, implying Earth, Mars, and Vesta share a similar inner-Solar-System composition. The findings raise questions about how Earth's oceans formed if water-rich material did not come from farther out, and whether this pattern applies to Mercury and Venus as well.
A NASA-backed study argues Earth acquired its life-essential phosphorus and nitrogen primarily from inner Solar System planetesimals, with Jupiter's gravity redistributing materials and limiting outer Solar System contributions, challenging the idea that comets and asteroids from farther out delivered these ingredients.
A NASA‑backed study using lab experiments and geochemical models argues Earth’s supply of life‑supporting phosphorus and nitrogen came mainly from inner solar system planetesimals (iron meteorites and related material), not outer‑solar‑system chondrites. Jupiter’s growth likely restricted the movement of these elements, helping inner bodies retain a higher phosphorus-to-nitrogen ratio and seed Earth with the needed ingredients for habitability. The findings suggest Earth acquired its P and N from the inner solar system, though it remains open whether a Jupiter‑like planet is essential for such elemental budgets.
New isotopic evidence suggests Earth formed largely from material in the inner Solar System, with Jupiter’s gravity acting as a barrier that kept outer Solar System material from mixing into Earth; while most building blocks were local, some water and possibly carbon may have arrived later from outer-body impacts.
New isotopic analyses of meteorites and early Earth rocks indicate Earth formed predominantly from material from the inner Solar System, with Jupiter’s gravity acting as a barrier that limited outer-Solar-System material; the planet’s overall isotopic composition is homogeneous, while water (and some carbon) likely arrived later from outer-body sources.