Science ❯ Astronomy ❯ Solar System

Planetary Formation

Orbital Dynamics Planet Nine Hypothesis Gravity Effects Satellite Formation Gravitational Interactions Chemical Composition of Planets Protoplanetary Disks Planetary Structure Material Composition Geological Activity Bennu Gravitational Dynamics Lunar Evolution Origins of Water Saturn Asteroid Research Asteroid Origins Asteroids Kuiper Belt Objects Volatiles Delivery Rocky Planets Protoplanetary Disk Outer Planets Mercury's Crust Collisions Early Solar System Meteorite Studies Volatiles Gas Planets Late Heavy Bombardment

Lab Experiments Recreate Mercury Magma to Show Sulfur Lowers Crystallization Temperatures

The results point to sulfur‑driven magmatism in an oxygen‑poor state on Mercury.

Earth Formed Entirely from Inner Solar System Material, Study Finds

Juno Data Refine Jupiter’s Size, Finding the Giant Slightly Smaller and More Flattened

Machine Learning Maps 400 Bright Slope Streaks on Mercury, Hinting at Ongoing Volatile Loss

Apollo Soil Study Finds Meteorites Supplied Only a Small Share of Earth’s Water

NASA Study of Apollo Moon Soil Finds Meteorites Supplied Only a Small Share of Earth’s Water

Researchers Identify Compact 'Inner Kernel' in the Kuiper Belt at 43 AU

Astronomers Confirm 2025 PN7 as Earth’s Seventh Quasi-Satellite

Study Pinpoints a Dry Proto‑Earth Within 3 Million Years, Bolstering Theia Water‑Delivery Theory

Discovery of 'Ammonite' Narrows Search for Planet Nine