Science ❯ Astronomy

Celestial Navigation

Constellations Star Identification Night Sky Observation Star Charts Star Patterns Stellar Patterns North Star Animal Navigation Radiant Points Stellar Navigation Spacecraft Maneuverability Stellar Cues Invertebrate Navigation Historical Techniques Star Navigation Stargazing Star Clusters Star Observation Stellar Compass Sternbilder Visibility Conditions Timekeeping Radiants Telescope Use Ecliptic Star Mapping Stargazing Apps Right Ascension Spacecraft Navigation Star Maps Visibility at High Altitudes Guiding Stars Visibility

Venus Slides Past Regulus in a Weeklong Evening Show and Returns Near the Crescent Moon Next Week

The close July pairing highlights Venus’s steady motion against the stars and signals its descent lower in evening twilight as it moves toward August’s greatest elongation.

Tonight the Moon Will Hide Regulus Across Parts of the Americas

Comet Pan‑STARRS Reaches Perihelion Sunday, Closing a Brief Pre‑Dawn Viewing Window

SR-71 Retrospectives Revisit the Blackbird’s True Speed Limits

Rare Comet Pan‑STARRS Now Glows Before Dawn for a Short Northern Viewing Window

Crescent Moon Pairs With Venus on the Vernal Equinox

Crescent Moon Brushes Past Saturn Tonight, With Neptune Nearby

Orionid Meteor Shower Peaks Oct. 21–23 Under New-Moon Skies

Twin Green Comets Enter Prime Viewing Week Before Closest Approaches

Bogong Moths Navigate 1,000-Kilometer Spring Migration by Starlight