Science ❯ Astronomy

Cosmic Structures

Cosmic Web Gas and Dust Nebulae Galaxies Galaxy Clusters Odd Radio Circles Interstellar Medium Ring Systems Massive Galaxies Dust Clouds Low Surface Brightness Universe Big Ring Ultra-Large Cosmic Structures Distance Size Dust in Space Ice Particles Pillars of Creation Gas and Dust in Space Gas and Dust Bubbles Dense Clumps Black Hole Jets Radio Astronomy Black Holes Constellations Stellar Associations Cone Nebula Gas Interactions Star Formation Gas and Dust Clouds

Webb’s Infrared Images Reveal Hidden Dust and Gas Inside the Lion Nebula

The new NIRCam and MIRI observations let astronomers trace compact dust clumps, ionized-gas bubbles, and molecular signatures that explain how the central white dwarf sculpts the nebula.

JWST Survey Delivers Most Detailed Map of the Cosmic Web to Date

James Webb Maps the Universe’s Cosmic Web in Record Detail

Hubble Marks 36 Years With Sharper Trifid Nebula Portrait That Shows Change

JWST and ALMA Reveal Early Massive Galaxy Quenched by Black Hole Starvation

New Images and Holiday Sky Guides Spotlight the Christmas Tree Cluster

EarthSky Names 2025’s Top Stories, Led by Interstellar Comet 3I/ATLAS

Astronomers Map 50-Million–Light-Year Rotating Cosmic Filament Nearby

Pleiades Recast as Core of a Vast 'Greater Pleiades' Stellar Family

ESO Telescope Reveals Bat-Shaped Stellar Nursery 10,000 Light-Years Away

Webb Unveils Red Spider Nebula’s Closed Lobes, Iron‑Traced Jet, and Shrouded Core

Citizen Scientists Find Most Distant, Most Powerful Odd Radio Circle With Double Rings

Citizen Scientists Find Most Distant, Most Powerful Odd Radio Circle With Twin Rings

Webb Traces Planet-Building Dust from Butterfly Nebula to ‘Butterfly Star’ Disk

ALMA Maps 1.4‑Light‑Year, Sun‑Mass Bubble Around Red Supergiant DFK 52