Astrophysics

Orbital Mechanics Light Phenomena Meteor Showers Comets Meteors Planetary Motion Light and Shadow Celestial Phenomena Solar Phenomena Auroras

Tonight the Moon Will Hide Regulus Across Parts of the Americas

The precise alignment offers a rare naked‑eye lesson in the Moon’s motion.

Astronomers Unveil Most Compact Known 3+1 Quadruple-Star System

Saturn's Rings Seem to Vanish in Rare Edge-On Alignment on Nov. 23–24

Beaver Moon Supermoon Tonight Is 2025’s Largest as Perigee Hits 23:27 Italian Time

Orionids Peak Oct. 22–23 With Dark Skies Boosting Pre-Dawn Viewing

Saturn Reaches Opposition Sunday With Rare Titan Shadow Transit Overnight

VLT Spectra Reveal Gas Ring Around V Sagittae, Hinting at Likely Nova in Coming Years

Hikers Asked to Join Hunt for Meteorites in Scottish Highlands After July Fireball

Water Vapor Spotted in Tail of Interstellar Comet 3I/ATLAS

NOAA Forecasts Aurora Displays From Washington to Maine on July 2–3

Saturn's Moon Count Soars to 274 with Discovery of 128 New Satellites

Leonid Meteor Shower to Light Up November Skies

Leonid Meteor Shower to Light Up November Skies

Two Comets to Illuminate Fall Skies, Offering Rare Celestial Show

Comet A3 Tsuchinshan-ATLAS Set for Spectacular Show in Northern Hemisphere

New Imaging Techniques Unveil Vast Galactic Halos

Mars and Jupiter to Appear Closest in Sky Until 2033

Double Meteor Showers to Illuminate Night Skies Next Week