Science ❯ Astrophysics

Planetary Formation

Solar System Debris Disks Orbital Dynamics Exoplanetary Systems Chemical Composition Accretion Processes Planetary Atmospheres Low-Mass Planets Solar System Formation Interstellar Objects

Astronomers Measure Mass of a Free-Floating Planet for the First Time

A two-hour offset between Earth and Gaia views of a microlensing event provided the parallax to pin down its distance and mass.

JWST Reveals Pulsar-Orbiting ‘Lemon’ Planet With Helium–Carbon Atmosphere

Webb Finds Carbon-Rich Atmosphere on Lemon-Shaped Planet Orbiting a Pulsar

JWST Finds Strong Evidence of a Thick Atmosphere on Molten Super-Earth TOI-561 b

Webb Data Point to Thick Atmosphere on Ultra‑Hot Super‑Earth TOI‑561 b

Interstellar Comet 3I/ATLAS Reaches Perihelion as Study Points to Europa Clipper Tail Sampling Window

Ancient Mantle Rocks Reveal Potassium-40 Deficit Linked to Surviving Proto‑Earth

Rogue Planet Devours Matter at Record 6 Billion Tons Per Second

Rogue Planet Cha 1107‑7626 Caught in Record Growth Spurt at 6 Billion Tons per Second

SwRI Says Interstellar Comet Flybys Are Achievable as 3I/ATLAS Defies Expectations

Nature Study Confirms Solid Inner Core on Mars

Alpha Centauri A’s Suspected Gas Giant Evades 2025 JWST Searches

Gas Giant HIP 67522 b Triggers Intense Stellar Flares, Accelerating Its Atmospheric Loss

James Webb Directly Images Young Saturn-Mass Exoplanet in Disk

Webb Reveals Silicate Clouds and Moon-Forming Disk in YSES-1 System

Webb Images One of Coldest Exoplanets in Chaotic Misaligned System

James Webb Telescope Unveils Clear Atmosphere of Hot Sub-Neptune TOI-421 b

Astronomers Confirm Discovery of Rare Disintegrating Exoplanet BD+05 4868 Ab

Astronomers Discover Rare Disintegrating Exoplanet with Massive Dust Tail

Hubble's 20-Year Study Reveals Uranus's Dynamic Atmosphere and Seasonal Changes