Science ❯ Cosmology

Milky Way Galaxy

Planetary Systems Star Formation Celestial Mechanics Star Types Galactic Center Technological Species

Astronomers Make First Direct Mass Measurement of a Rogue Planet

Simultaneous Earth–Gaia observations produced a microlens‑parallax signal that broke the long‑standing mass–distance degeneracy.

New Model Points to Rare, Far-Flung ETIs, Estimating the Nearest at 33,000 Light-Years